Author: Hsu-chuan Tuan
Publisher:
ISBN:
Category : Clarkia
Languages : en
Pages : 102

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Author: Bernard John
Publisher: Springer
ISBN: 9783211808818
Category : Science
Languages : en
Pages : 210

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Book Description
material can serve both autocatalytic and heterocatalytic functions. Thus not only is it unique in itB capacity for self-replication but its base sequence determines the specificity of proteins. And enzyme proteins are immediately responsible for the peripheral metabolism which enables the organism to impose its own kind of order on the raw materials it absorbs. The course of development is determined not only by the nature of the genetic material but by its over-all amount and the relative frequency of the different functional units. Differential rates of epigenetic activity matter also. In theory, therefore, differential development within or even between individuals could be determined by the differential replication of the various genetic elements or by their differential activity. And further variation could arise by the differential transmission of these elements between cells. Indeed it would appear that all these possibilities are exploited by living systems. If like is to beget like, however, any genetic change which occurs during development must be undone, or else germinal units preserved from change must be set aside. As far as is known, genetic changes, even those involving only quantity or relative amounts, are reversible to only a very limited extent so that a change once done cannot be undone. Consequently genetic changes during the development of presumptive germ-lines are either non existant or minor and confined to a small class of un aggregated deter minants.

Author: Stanford University
Publisher:
ISBN:
Category :
Languages : en
Pages : 408

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1913/15 contains reports of chancellor and treasurer; 1919/24, reports of treasurer and comptroller; 1924- reports of treasurer, comptroller, departments, committees and the publications of the faculty.

Author: Stanford University
Publisher:
ISBN:
Category :
Languages : en
Pages : 1228

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Book Description
Contains annual financial report, reports of schools, departments, committees, other administrative offices, and publications of the faculty.

Author:
Publisher:
ISBN:
Category : Botany, Experimental
Languages : en
Pages : 822

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Revista internacional de botanica experimental. International journal of experimental botany.

Author: Stanford University
Publisher:
ISBN:
Category :
Languages : en
Pages : 787

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Contains annual financial report, reports of schools, departments, committees, other administrative offices, and publications of the faculty.

Author: China Institute in America
Publisher:
ISBN:
Category : China
Languages : en
Pages : 42

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Author: Bernard John
Publisher: Springer Science & Business Media
ISBN: 3709157811
Category : Science
Languages : en
Pages : 211

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Book Description
material can serve both autocatalytic and heterocatalytic functions. Thus not only is it unique in itB capacity for self-replication but its base sequence determines the specificity of proteins. And enzyme proteins are immediately responsible for the peripheral metabolism which enables the organism to impose its own kind of order on the raw materials it absorbs. The course of development is determined not only by the nature of the genetic material but by its over-all amount and the relative frequency of the different functional units. Differential rates of epigenetic activity matter also. In theory, therefore, differential development within or even between individuals could be determined by the differential replication of the various genetic elements or by their differential activity. And further variation could arise by the differential transmission of these elements between cells. Indeed it would appear that all these possibilities are exploited by living systems. If like is to beget like, however, any genetic change which occurs during development must be undone, or else germinal units preserved from change must be set aside. As far as is known, genetic changes, even those involving only quantity or relative amounts, are reversible to only a very limited extent so that a change once done cannot be undone. Consequently genetic changes during the development of presumptive germ-lines are either non existant or minor and confined to a small class of un aggregated deter minants.

Author: Johann Greilhuber
Publisher: Springer Science & Business Media
ISBN: 3709111609
Category : Science
Languages : en
Pages : 360

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Book Description
This second of two volumes on Plant Genome Diversity provides, in 20 chapters, insights into the structural evolution of plant genomes with all its variations. Starting with an outline of plant phylogeny and its reconstruction, the second part of the volume describes the architecture and dynamics of the plant cell nucleus, the third examines the evolution and diversity of the karyotype in various lineages, including angiosperms, gymnosperms and monilophytes. The fourth part presents the mechanisms of polyploidization and its biological consequences and significance for land plant evolution. The fifth part deals with genome size evolution and its biological significance. Together with Volume I, this comprehensive book on the plant genome is intended for students and professionals in all fields of plant science, offering as it does a convenient entry into a burgeoning literature in a fast-moving field.

Author: Indian Science Congress Association
Publisher:
ISBN:
Category : Indian Science Congress
Languages : en
Pages : 1204

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Book Description