Author: Denis Plotnikov
Publisher: Frontiers Media SA
ISBN: 283253838X
Category : Science
Languages : en
Pages : 134
Book Description
Exploiting genetics and genomics to improve the understanding of eye diseases
Author: Denis Plotnikov
Publisher: Frontiers Media SA
ISBN: 283253838X
Category : Science
Languages : en
Pages : 134
Book Description
Publisher: Frontiers Media SA
ISBN: 283253838X
Category : Science
Languages : en
Pages : 134
Book Description
Human Genetics and Genomics
Author: Bruce R. Korf
Publisher: John Wiley & Sons
ISBN: 1118537661
Category : Medical
Languages : en
Pages : 280
Book Description
This fourth edition of the best-selling textbook, Human Genetics and Genomics, clearly explains the key principles needed by medical and health sciences students, from the basis of molecular genetics, to clinical applications used in the treatment of both rare and common conditions. A newly expanded Part 1, Basic Principles of Human Genetics, focuses on introducing the reader to key concepts such as Mendelian principles, DNA replication and gene expression. Part 2, Genetics and Genomics in Medical Practice, uses case scenarios to help you engage with current genetic practice. Now featuring full-color diagrams, Human Genetics and Genomics has been rigorously updated to reflect today’s genetics teaching, and includes updated discussion of genetic risk assessment, “single gene” disorders and therapeutics. Key learning features include: Clinical snapshots to help relate science to practice 'Hot topics' boxes that focus on the latest developments in testing, assessment and treatment 'Ethical issues' boxes to prompt further thought and discussion on the implications of genetic developments 'Sources of information' boxes to assist with the practicalities of clinical research and information provision Self-assessment review questions in each chapter Accompanied by the Wiley E-Text digital edition (included in the price of the book), Human Genetics and Genomics is also fully supported by a suite of online resources at www.korfgenetics.com, including: Factsheets on 100 genetic disorders, ideal for study and exam preparation Interactive Multiple Choice Questions (MCQs) with feedback on all answers Links to online resources for further study Figures from the book available as PowerPoint slides, ideal for teaching purposes The perfect companion to the genetics component of both problem-based learning and integrated medical courses, Human Genetics and Genomics presents the ideal balance between the bio-molecular basis of genetics and clinical cases, and provides an invaluable overview for anyone wishing to engage with this fast-moving discipline.
Publisher: John Wiley & Sons
ISBN: 1118537661
Category : Medical
Languages : en
Pages : 280
Book Description
This fourth edition of the best-selling textbook, Human Genetics and Genomics, clearly explains the key principles needed by medical and health sciences students, from the basis of molecular genetics, to clinical applications used in the treatment of both rare and common conditions. A newly expanded Part 1, Basic Principles of Human Genetics, focuses on introducing the reader to key concepts such as Mendelian principles, DNA replication and gene expression. Part 2, Genetics and Genomics in Medical Practice, uses case scenarios to help you engage with current genetic practice. Now featuring full-color diagrams, Human Genetics and Genomics has been rigorously updated to reflect today’s genetics teaching, and includes updated discussion of genetic risk assessment, “single gene” disorders and therapeutics. Key learning features include: Clinical snapshots to help relate science to practice 'Hot topics' boxes that focus on the latest developments in testing, assessment and treatment 'Ethical issues' boxes to prompt further thought and discussion on the implications of genetic developments 'Sources of information' boxes to assist with the practicalities of clinical research and information provision Self-assessment review questions in each chapter Accompanied by the Wiley E-Text digital edition (included in the price of the book), Human Genetics and Genomics is also fully supported by a suite of online resources at www.korfgenetics.com, including: Factsheets on 100 genetic disorders, ideal for study and exam preparation Interactive Multiple Choice Questions (MCQs) with feedback on all answers Links to online resources for further study Figures from the book available as PowerPoint slides, ideal for teaching purposes The perfect companion to the genetics component of both problem-based learning and integrated medical courses, Human Genetics and Genomics presents the ideal balance between the bio-molecular basis of genetics and clinical cases, and provides an invaluable overview for anyone wishing to engage with this fast-moving discipline.
Genomic Biointelligence
Author: Edenilson Brandl
Publisher: Edenilson Brandl
ISBN:
Category : Health & Fitness
Languages : en
Pages : 267
Book Description
It is with great enthusiasm that I present to you the book "Genomic Biointelligence". This book is a fascinating journey through the ever-evolving world of genomics and artificial intelligence, exploring their intersection and the role of the genomic biointelligence within this context. Genomics has revolutionized our understanding of the genetic code and brought with it a vast volume of data that challenges our ability to analyze and interpret. On the other hand, artificial intelligence has emerged as a powerful tool to deal with this complexity and extract valuable information from genomic data. Within the pages of this book, you will be guided on a comprehensive journey through key topics related to the application of artificial intelligence in genomics. From the history and evolution of artificial intelligence in genomics research to the latest applications in diagnostics, drug discovery, precision medicine and disease research, each chapter presents an important aspect of this rapidly expanding field. You will learn about genetic algorithms and their application in genomics, mathematical modeling of genomic regulatory networks, the use of neural networks in predicting protein structures, and much more. We will also discuss the challenges and limitations of using artificial intelligence in genomics, as well as ethical issues and the importance of data privacy. In addition, we will highlight the fundamental role of the genomic biointelligencist, a multidisciplinary professional who combines knowledge in genomics, artificial intelligence, bioinformatics and other related areas. The genomic biointelligence plays a crucial role in applying artificial intelligence to advance genomic research, discover new treatments, develop personalized therapies, and drive precision medicine. As we progress through this book, you will be invited to explore recent advances and the exciting possibilities that arise from the combination of genomics and artificial intelligence. Through practical examples, case studies and in-depth discussions, we hope to provide you with a solid understanding of the concepts and applications of this rapidly expanding field. Finally, I would like to express my gratitude to all the experts and researchers who contributed their unique knowledge and insights to this book. Their efforts and dedication are instrumental in advancing the field of genomics and artificial intelligence. I hope you will find this book a valuable source of information and inspiration. May it arouse your curiosity, stimulate discussions and motivate you to further explore the frontiers of knowledge in the field of genomics and artificial intelligence.
Publisher: Edenilson Brandl
ISBN:
Category : Health & Fitness
Languages : en
Pages : 267
Book Description
It is with great enthusiasm that I present to you the book "Genomic Biointelligence". This book is a fascinating journey through the ever-evolving world of genomics and artificial intelligence, exploring their intersection and the role of the genomic biointelligence within this context. Genomics has revolutionized our understanding of the genetic code and brought with it a vast volume of data that challenges our ability to analyze and interpret. On the other hand, artificial intelligence has emerged as a powerful tool to deal with this complexity and extract valuable information from genomic data. Within the pages of this book, you will be guided on a comprehensive journey through key topics related to the application of artificial intelligence in genomics. From the history and evolution of artificial intelligence in genomics research to the latest applications in diagnostics, drug discovery, precision medicine and disease research, each chapter presents an important aspect of this rapidly expanding field. You will learn about genetic algorithms and their application in genomics, mathematical modeling of genomic regulatory networks, the use of neural networks in predicting protein structures, and much more. We will also discuss the challenges and limitations of using artificial intelligence in genomics, as well as ethical issues and the importance of data privacy. In addition, we will highlight the fundamental role of the genomic biointelligencist, a multidisciplinary professional who combines knowledge in genomics, artificial intelligence, bioinformatics and other related areas. The genomic biointelligence plays a crucial role in applying artificial intelligence to advance genomic research, discover new treatments, develop personalized therapies, and drive precision medicine. As we progress through this book, you will be invited to explore recent advances and the exciting possibilities that arise from the combination of genomics and artificial intelligence. Through practical examples, case studies and in-depth discussions, we hope to provide you with a solid understanding of the concepts and applications of this rapidly expanding field. Finally, I would like to express my gratitude to all the experts and researchers who contributed their unique knowledge and insights to this book. Their efforts and dedication are instrumental in advancing the field of genomics and artificial intelligence. I hope you will find this book a valuable source of information and inspiration. May it arouse your curiosity, stimulate discussions and motivate you to further explore the frontiers of knowledge in the field of genomics and artificial intelligence.
Departments of Labor, Health and Human Services, and Education, and Related Agencies Appropriations for Fiscal Year 2001
Author: United States. Congress. Senate. Committee on Appropriations. Subcommittee on Departments of Labor, Health and Human Services, Education, and Related Agencies
Publisher:
ISBN:
Category : Political Science
Languages : en
Pages : 568
Book Description
Publisher:
ISBN:
Category : Political Science
Languages : en
Pages : 568
Book Description
Emery and Rimoin's Principles and Practice of Medical Genetics and Genomics
Author: Reed E. Pyeritz
Publisher: Elsevier
ISBN: 0128152354
Category : Medical
Languages : en
Pages : 546
Book Description
For decades, Emery and Rimoin's Principles and Practice of Medical Genetics and Genomics has served as the ultimate resource for clinicians integrating genetics and genomics into medical practice. With detailed coverage in contributions from more than 250 of the world's most trusted authorities in medical genetics and a series of 11 volumes available for individual sale, the Seventh Edition of this classic reference includes the latest information on seminal topics such as prenatal diagnosis, genome sequencing, public health genetics, genetic counseling, and management and treatment strategies to complete its coverage of this growing field for students, health providers, and researchers involved in the care of patients with genetic conditions, and increasingly, all areas of health and disease. This comprehensive yet practical resource emphasizes theory and research fundamentals related to the applications of medical genetics and genomics across the full spectrum of inherited disorders and applications to medicine more broadly. In this volume, leading physicians and researchers thoroughly examine medical genetics and genomics as applied to developmental disorders, as well as genetic conditions that affect hearing and vision. Here genetic researchers, students, and health professionals will find new and fully revised chapters on human developmental genetics, disorders affecting craniofacial development, chromosomal abnormalities, including aneuploidies and structural abnormalities, hereditary hearing impairment, and various genetic conditions of the eye. With regular advances in genomic technologies propelling precision medicine into the clinic, Emery and Rimoin's Principles and Practice of Medical Genetics and Genomics, Seventh Edition bridges the gap between high-level molecular genetics and practical application and serves as an invaluable clinical tool for health professionals and researchers. - Thoroughly introduces genetic researchers, students, and healthcare professionals to the principles of human developmental genetics - Examines a wide range of developmental disorders, including craniofacial development as well as disorders affecting hearing and vision - Includes color images supporting identification, concept illustration, and method processing - Features contributions by leading international researchers and practitioners of medical genetics
Publisher: Elsevier
ISBN: 0128152354
Category : Medical
Languages : en
Pages : 546
Book Description
For decades, Emery and Rimoin's Principles and Practice of Medical Genetics and Genomics has served as the ultimate resource for clinicians integrating genetics and genomics into medical practice. With detailed coverage in contributions from more than 250 of the world's most trusted authorities in medical genetics and a series of 11 volumes available for individual sale, the Seventh Edition of this classic reference includes the latest information on seminal topics such as prenatal diagnosis, genome sequencing, public health genetics, genetic counseling, and management and treatment strategies to complete its coverage of this growing field for students, health providers, and researchers involved in the care of patients with genetic conditions, and increasingly, all areas of health and disease. This comprehensive yet practical resource emphasizes theory and research fundamentals related to the applications of medical genetics and genomics across the full spectrum of inherited disorders and applications to medicine more broadly. In this volume, leading physicians and researchers thoroughly examine medical genetics and genomics as applied to developmental disorders, as well as genetic conditions that affect hearing and vision. Here genetic researchers, students, and health professionals will find new and fully revised chapters on human developmental genetics, disorders affecting craniofacial development, chromosomal abnormalities, including aneuploidies and structural abnormalities, hereditary hearing impairment, and various genetic conditions of the eye. With regular advances in genomic technologies propelling precision medicine into the clinic, Emery and Rimoin's Principles and Practice of Medical Genetics and Genomics, Seventh Edition bridges the gap between high-level molecular genetics and practical application and serves as an invaluable clinical tool for health professionals and researchers. - Thoroughly introduces genetic researchers, students, and healthcare professionals to the principles of human developmental genetics - Examines a wide range of developmental disorders, including craniofacial development as well as disorders affecting hearing and vision - Includes color images supporting identification, concept illustration, and method processing - Features contributions by leading international researchers and practitioners of medical genetics
Drosophila Eye Development
Author: Kevin Moses
Publisher: Springer Science & Business Media
ISBN: 9783540425908
Category : Medical
Languages : en
Pages : 296
Book Description
1 Kevin Moses It is now 25 years since the study of the development of the compound eye in Drosophila really began with a classic paper (Ready et al. 1976). In 1864, August Weismann published a monograph on the development of Diptera and included some beautiful drawings of the developing imaginal discs (Weismann 1864). One of these is the first description of the third instar eye disc in which Weismann drew a vertical line separating a posterior domain that included a regular pattern of clustered cells from an anterior domain without such a pattern. Weismann suggested that these clusters were the precursors of the adult ommatidia and that the line marks the anterior edge of the eye. In his first suggestion he was absolutely correct - in his second he was wrong. The vertical line shown was not the anterior edge of the eye, but the anterior edge of a moving wave of patterning and cell type specification that 112 years later (1976) Ready, Hansen and Benzer would name the "morphogenetic furrow". While it is too late to hear from August Weismann, it is a particular pleasure to be able to include a chapter in this Volume from the first author of that 1976 paper: Don Ready! These past 25 years have seen an astonishing explosion in the study of the fly eye (see Fig.
Publisher: Springer Science & Business Media
ISBN: 9783540425908
Category : Medical
Languages : en
Pages : 296
Book Description
1 Kevin Moses It is now 25 years since the study of the development of the compound eye in Drosophila really began with a classic paper (Ready et al. 1976). In 1864, August Weismann published a monograph on the development of Diptera and included some beautiful drawings of the developing imaginal discs (Weismann 1864). One of these is the first description of the third instar eye disc in which Weismann drew a vertical line separating a posterior domain that included a regular pattern of clustered cells from an anterior domain without such a pattern. Weismann suggested that these clusters were the precursors of the adult ommatidia and that the line marks the anterior edge of the eye. In his first suggestion he was absolutely correct - in his second he was wrong. The vertical line shown was not the anterior edge of the eye, but the anterior edge of a moving wave of patterning and cell type specification that 112 years later (1976) Ready, Hansen and Benzer would name the "morphogenetic furrow". While it is too late to hear from August Weismann, it is a particular pleasure to be able to include a chapter in this Volume from the first author of that 1976 paper: Don Ready! These past 25 years have seen an astonishing explosion in the study of the fly eye (see Fig.
Advances in poultry genetics and genomics
Author: Professor Sammy Aggrey
Publisher: Burleigh Dodds Science Publishing
ISBN: 1786763265
Category : Technology & Engineering
Languages : en
Pages : 418
Book Description
Particular focus on improving functional traits needed for more resilient poultry breeds Comprehensive coverage of key advances in genomic selection and their practical application in breeding improved breeds of layers and broilers Looks forward to emerging trends such as the use of epigenetics and genome editing
Publisher: Burleigh Dodds Science Publishing
ISBN: 1786763265
Category : Technology & Engineering
Languages : en
Pages : 418
Book Description
Particular focus on improving functional traits needed for more resilient poultry breeds Comprehensive coverage of key advances in genomic selection and their practical application in breeding improved breeds of layers and broilers Looks forward to emerging trends such as the use of epigenetics and genome editing
Cancer Systems Biology, Bioinformatics and Medicine
Author: Alfredo Cesario
Publisher: Springer Science & Business Media
ISBN: 9400715676
Category : Medical
Languages : en
Pages : 496
Book Description
This teaching monograph on systems approaches to cancer research and clinical applications provides a unique synthesis, by world-class scientists and doctors, of laboratory, computational, and clinical methods, thereby establishing the foundations for major advances not possible with current methods. Specifically, the book: 1) Sets the stage by describing the basis of systems biology and bioinformatics approaches, and the clinical background of cancer in a systems context; 2) Summarizes the laboratory, clinical, data systems analysis and bioinformatics tools, along with infrastructure and resources required; 3) Demonstrates the application of these tools to cancer research; 4) Extends these tools and methods to clinical diagnosis, drug development and treatment applications; and 5) Finishes by exploring longer term perspectives and providing conclusions. This book reviews the state-of-the-art, and goes beyond into new applications. It is written and highly referenced as a textbook and practical guide aimed at students, academics, doctors, clinicians, industrialists and managers in cancer research and therapeutic applications. Ideally, it will set the stage for integration of available knowledge to optimize communication between basic and clinical researchers involved in the ultimate fight against cancer, whatever the field of specific interest, whatever the area of activity within translational research.
Publisher: Springer Science & Business Media
ISBN: 9400715676
Category : Medical
Languages : en
Pages : 496
Book Description
This teaching monograph on systems approaches to cancer research and clinical applications provides a unique synthesis, by world-class scientists and doctors, of laboratory, computational, and clinical methods, thereby establishing the foundations for major advances not possible with current methods. Specifically, the book: 1) Sets the stage by describing the basis of systems biology and bioinformatics approaches, and the clinical background of cancer in a systems context; 2) Summarizes the laboratory, clinical, data systems analysis and bioinformatics tools, along with infrastructure and resources required; 3) Demonstrates the application of these tools to cancer research; 4) Extends these tools and methods to clinical diagnosis, drug development and treatment applications; and 5) Finishes by exploring longer term perspectives and providing conclusions. This book reviews the state-of-the-art, and goes beyond into new applications. It is written and highly referenced as a textbook and practical guide aimed at students, academics, doctors, clinicians, industrialists and managers in cancer research and therapeutic applications. Ideally, it will set the stage for integration of available knowledge to optimize communication between basic and clinical researchers involved in the ultimate fight against cancer, whatever the field of specific interest, whatever the area of activity within translational research.
Unraveling Genetic Mysteries: Longevity, Genetic Engineering and Philosophy of Mind
Author: Edenilson Brandl
Publisher: Edenilson Brandl
ISBN:
Category : Health & Fitness
Languages : en
Pages : 541
Book Description
Genetics is a fascinating and complex field, which reveals the secrets of the genetic code present in every living being. Through the investigation of genes and their interaction with the environment, we are able to better understand the biological processes that shape our existence. In this book, we'll explore the wonders and challenges of genetics, as well as its applications in areas such as medicine, criminal investigation, and genetic engineering. The first part of this book will take us through the intricate world of the genetics of aging and longevity. We will investigate the genetic mechanisms that determine the rate of aging of organisms and explore the possibilities of prolonging a healthy life. We'll discover how the latest research is unlocking the mysteries of aging and offering new insights into human longevity. Then we will enter the field of genetic engineering and genetically modified organisms (GMOs). We will explore the innovative techniques that allow the manipulation of DNA and the creation of organisms with specific characteristics. We'll see how this technology is revolutionizing agriculture, medicine, and industry, while raising important ethical and environmental questions. Forensic genetics will also gain prominence on our journey. We will investigate how DNA analysis has become a powerful tool in solving crimes, unraveling mysteries and assisting in the pursuit of justice. We'll discover how technological advances are revolutionizing criminal investigation and providing a deeper understanding of the genetic bonds between individuals. Entering the field of health, we will explore the genetics of neurodegenerative, cardiovascular, autoimmune and psychiatric disorders. We will understand how genes play a key role in the development of these diseases and how this understanding can open the way to more effective treatments and prevention strategies. In addition, we will investigate pharmacogenomics and precision medicine, examining how genetic individuality influences individuals' response to medications, enabling personalized and more effective treatments. We'll also cover the genetics of metabolism and obesity, sleep disorders, and the genetic implications for these conditions. The second part of this book will take us on a philosophical journey into the world of the mind. We'll explore debates about the nature of consciousness, the mind-body problem, reductionism, and dualism. We will investigate the relationship between the mind and the brain, the question of personal identity over time, and the philosophical implications of the mind in relation to artificial intelligence, free will, neuroscience, qualia, and even animal consciousness.
Publisher: Edenilson Brandl
ISBN:
Category : Health & Fitness
Languages : en
Pages : 541
Book Description
Genetics is a fascinating and complex field, which reveals the secrets of the genetic code present in every living being. Through the investigation of genes and their interaction with the environment, we are able to better understand the biological processes that shape our existence. In this book, we'll explore the wonders and challenges of genetics, as well as its applications in areas such as medicine, criminal investigation, and genetic engineering. The first part of this book will take us through the intricate world of the genetics of aging and longevity. We will investigate the genetic mechanisms that determine the rate of aging of organisms and explore the possibilities of prolonging a healthy life. We'll discover how the latest research is unlocking the mysteries of aging and offering new insights into human longevity. Then we will enter the field of genetic engineering and genetically modified organisms (GMOs). We will explore the innovative techniques that allow the manipulation of DNA and the creation of organisms with specific characteristics. We'll see how this technology is revolutionizing agriculture, medicine, and industry, while raising important ethical and environmental questions. Forensic genetics will also gain prominence on our journey. We will investigate how DNA analysis has become a powerful tool in solving crimes, unraveling mysteries and assisting in the pursuit of justice. We'll discover how technological advances are revolutionizing criminal investigation and providing a deeper understanding of the genetic bonds between individuals. Entering the field of health, we will explore the genetics of neurodegenerative, cardiovascular, autoimmune and psychiatric disorders. We will understand how genes play a key role in the development of these diseases and how this understanding can open the way to more effective treatments and prevention strategies. In addition, we will investigate pharmacogenomics and precision medicine, examining how genetic individuality influences individuals' response to medications, enabling personalized and more effective treatments. We'll also cover the genetics of metabolism and obesity, sleep disorders, and the genetic implications for these conditions. The second part of this book will take us on a philosophical journey into the world of the mind. We'll explore debates about the nature of consciousness, the mind-body problem, reductionism, and dualism. We will investigate the relationship between the mind and the brain, the question of personal identity over time, and the philosophical implications of the mind in relation to artificial intelligence, free will, neuroscience, qualia, and even animal consciousness.
Advanced Crop Improvement, Volume 1
Author: Aamir Raina
Publisher: Springer Nature
ISBN: 3031281462
Category : Science
Languages : en
Pages : 546
Book Description
As per the reports of FAO, the human population will rise to 9 billion by the end of 2050 and 70% of more food must be produced over the next three decades to feed the additional population. The breeding approaches for crop improvement programs are dependent on the availability and accessibility of genetic variation, either spontaneous or induced by the mutagens. Plant breeders, agronomists, and geneticists are under constant pressure to expand food production by employing innovative breeding strategies to enhance yield, adaptability, nutrition, resistance to biotic and abiotic stresses. In conventional breeding approaches, introgression of genes in crop varieties is laborious and time-consuming. Nowadays, new innovative plant breeding techniques such as molecular breeding and plant biotechnology, supplement the traditional breeding approaches to achieve the desired goals of enhanced food production. With the advent of recent molecular tools like genomics, transgenics, molecular marker-assisted back-crossing, TILLING, Eco-TILLING, gene editing, CRISPR CAS, non-targeted protein abundant comparative proteomics, genome wide association studies have made possible mapping of important QTLs, insertion of transgenes, reduction of linkage drags, and manipulation of genome. In general, conventional and modern plant breeding approaches would be strategically ideal for developing new elite crop varieties to meet the feeding requirement of the increasing world population. This book highlights the latest progress in the field of plant breeding, and their applicability in crop improvement. The basic concept of this 2-volume work is to assess the use of modern breeding strategies in supplementing conventional breeding toward the development of elite crop varieties, for obtaining desired goals of food production.
Publisher: Springer Nature
ISBN: 3031281462
Category : Science
Languages : en
Pages : 546
Book Description
As per the reports of FAO, the human population will rise to 9 billion by the end of 2050 and 70% of more food must be produced over the next three decades to feed the additional population. The breeding approaches for crop improvement programs are dependent on the availability and accessibility of genetic variation, either spontaneous or induced by the mutagens. Plant breeders, agronomists, and geneticists are under constant pressure to expand food production by employing innovative breeding strategies to enhance yield, adaptability, nutrition, resistance to biotic and abiotic stresses. In conventional breeding approaches, introgression of genes in crop varieties is laborious and time-consuming. Nowadays, new innovative plant breeding techniques such as molecular breeding and plant biotechnology, supplement the traditional breeding approaches to achieve the desired goals of enhanced food production. With the advent of recent molecular tools like genomics, transgenics, molecular marker-assisted back-crossing, TILLING, Eco-TILLING, gene editing, CRISPR CAS, non-targeted protein abundant comparative proteomics, genome wide association studies have made possible mapping of important QTLs, insertion of transgenes, reduction of linkage drags, and manipulation of genome. In general, conventional and modern plant breeding approaches would be strategically ideal for developing new elite crop varieties to meet the feeding requirement of the increasing world population. This book highlights the latest progress in the field of plant breeding, and their applicability in crop improvement. The basic concept of this 2-volume work is to assess the use of modern breeding strategies in supplementing conventional breeding toward the development of elite crop varieties, for obtaining desired goals of food production.