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Author: Thomas Hunt Morgan
Publisher:
ISBN:
Category : Embryology
Languages : en
Pages : 228
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Book Description
Author: Thomas Hunt Morgan
Publisher:
ISBN:
Category : Embryology
Languages : en
Pages : 228
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Book Description
Author:
Publisher:
ISBN: 9780815332183
Category : Cells
Languages : en
Pages : 0
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Book Description
Author: Wendy Pfeffer
Publisher: Harper Collins
ISBN: 0064451232
Category : Juvenile Nonfiction
Languages : en
Pages : 36
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Book Description
Wendy Pfeffer describes the amazing metamorphosis from tiny, jellylike egg, to little fishy tadpole, to great big bullfrog. Holly Keller has created the archetypal frog pond and we see it through the seasons as the tadpoles grow legs and lungs and eventually hop onto land: bullfrogs at last. "Well-designed ink drawings washed with soft-toned watercolors stretch across the double-page spreads, showing the action above and below water level. . . .an attractive, general introduction."—BL. 1994 "Pick of the Lists" (ABA) Best Children's Science Books, 1994 (Science Books and Films)
Author: Thomas Hunt Morgan
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 794
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Book Description
Experimentelle Embryologie.
Author: Jacques Loeb
Publisher:
ISBN:
Category : Parthenogenesis
Languages : en
Pages : 330
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Book Description
Author: Stanley Fields
Publisher: MIT Press
ISBN: 0262289008
Category : Science
Languages : en
Pages : 235
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Book Description
How tiny variations in our personal DNA can determine how we look, how we behave, how we get sick, and how we get well. News stories report almost daily on the remarkable progress scientists are making in unraveling the genetic basis of disease and behavior. Meanwhile, new technologies are rapidly reducing the cost of reading someone's personal DNA (all six billion letters of it). Within the next ten years, hospitals may present parents with their newborn's complete DNA code along with her footprints and APGAR score. In Genetic Twists of Fate, distinguished geneticists Stanley Fields and Mark Johnston help us make sense of the genetic revolution that is upon us. Fields and Johnston tell real life stories that hinge on the inheritance of one tiny change rather than another in an individual's DNA: a mother wrongly accused of poisoning her young son when the true killer was a genetic disorder; the screen siren who could no longer remember her lines because of Alzheimer's disease; and the president who was treated with rat poison to prevent another heart attack. In an engaging and accessible style, Fields and Johnston explain what our personal DNA code is, how a few differences in its long list of DNA letters makes each of us unique, and how that code influences our appearance, our behavior, and our risk for such common diseases as diabetes or cancer.
Author: Florence Louise Marlow
Publisher: Morgan & Claypool Publishers
ISBN: 161504051X
Category : Family & Relationships
Languages : en
Pages : 221
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Book Description
Eggs of all animals contain mRNAs and proteins that are supplied to or deposited in the egg as it develops during oogenesis. These maternal gene products regulate all aspects of oocyte development, and an embryo fully relies on these maternal gene products for all aspects of its early development, including fertilization, transitions between meiotic and mitotic cell cycles, and activation of its own genome. Given the diverse processes required to produce a developmentally competent egg and embryo, it is not surprising that maternal gene products are not only essential for normal embryonic development but also for fertility. This review provides an overview of fundamental aspects of oocyte and early embryonic development and the interference and genetic approaches that have provided access to maternally regulated aspects of vertebrate development. Some of the pathways and molecules highlighted in this review, in particular, Bmps, Wnts, small GTPases, cytoskeletal components, and cell cycle regulators, are well known and are essential regulators of multiple aspects of animal development, including oogenesis, early embryogenesis, organogenesis, and reproductive fitness of the adult animal. Specific examples of developmental processes under maternal control and the essential proteins will be explored in each chapter, and where known conserved aspects or divergent roles for these maternal regulators of early vertebrate development will be discussed throughout this review. Table of Contents: Introduction / Oogenesis: From Germline Stem Cells to Germline Cysts / Oocyte Polarity and the Embryonic Axes: The Balbiani Body, an Ancient Oocyte Asymmetry / Preparing Developmentally Competent Eggs / Egg Activation / Blocking Polyspermy / Cleavage/ Mitosis: Going Multicellular / Maternal-Zygotic Transition / Reprogramming: Epigenetic Modifications and Zygotic Genome Activation / Dorsal-Ventral Axis Formation before Zygotic Genome Activation in Zebrafish and Frogs / Maternal TGF-β and the Dorsal-Ventral Embryonic Axis / Maternal Control After Zygotic Genome Activation / Compensation by Stable Maternal Proteins / Maternal Contributions to Germline Establishment or Maintenance / Perspective / Acknowledgments / References
Author: Claudio D. Stern
Publisher: CSHL Press
ISBN: 9780879697075
Category : Science
Languages : en
Pages : 802
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Book Description
During gastrulation, tissue layers are formed and the overall body plan is established. This book is the definitive guide to this vitally important period in embryonic development, providing authoritative and up to date information that includes the first comprehensive interspecies comparison, cell movements and patterning events, the roles of individual genes and gene families, and the evolution of gastrulation.
Author: DK
Publisher: Penguin
ISBN: 0744040507
Category : Juvenile Nonfiction
Languages : en
Pages : 82
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Book Description
Discover the amazing world of our cold-blooded friends in this book all about frogs and amphibians for kids. Embark on a fun, fact-filled dive into the world of frogs and amphibians with Everything You Need to Know About Frogs. Children will love to learn all the basics of reptile and amphibian anatomy in this beautiful and informative book on frogs. Packed with vibrant pictures and lots of fascinating facts, kids can enjoy learning all about a frog’s habitat and behavior. Discover how these amphibians survive in lakes and rivers, forests and deserts, and how these clever creatures have adapted to live in seemingly inhospitable habitats. Alongside, in between, and on top of all that, this riveting frog book also provides ideas for things to make, games to play, quizzes, and amazing facts to share with friends! Inside the pages of this frog book for children, you’ll find: A whole host of amphibians and reptiles including toads, snakes, lizards, salamanders, turtles, newts, tortoises and crocodiles. Close-ups, quizzes, and games with an exciting take on the amazing world of our cold-blooded friends. A look at these creatures from all angles – information on habitat and breeding habits, as well as oddities such as how to survive a crocodile’s attack, how a frog’s legs influenced Frankenstein, or how to play snakes and ladders. Children aged 7+ can learn all about frogs and amphibians from the very first page of this book, which combines little-known information with engaging text and an exciting design. Each page contains everything kids need to know, and everything they WANT to find out about frogs!. Complete the series This delightful frog book is part of the Everything You Need to Know series of educational books for children and also includes Everything You Need to Know About Snakes and Everything You Need to Know About Dinosaurs!
Author: Nathaniel T. Wheelwright
Publisher: Storey Publishing
ISBN: 1612128890
Category : Nature
Languages : en
Pages : 209
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Book Description
Become a more attentive observer and deepen your appreciation for the natural world. The unique five-year calendar format of The Naturalist’s Notebook helps you create a long-term record and point of comparison for memorable events, such as the first songbird you hear in spring, your first monarch butterfly sighting of summer, or the appearance of the northern lights. Biologist Nathaniel T. Wheelwright and best-selling author Bernd Heinrich teach nature lovers of all ages what to look for outdoors no matter where you live, using Heinrich’s classic illustrations as inspiration. As you jot down one observation a day, year after year, your collected field notes will serve as a valuable record of your piece of the planet. This deluxe book, with a three-piece case, gilt edges, a burgundy ribbon bookmark, and a belly band with gold foil stamping, is a perfect gift for all nature lovers.
