Excerpt from A Case of Triplet Calves: With Some General Considerations Regarding Multiple Gestation in Normally Uniparous Animals
The mere fact Of the occurrence Of multiple pregnancies in forms normally bearing but one young at a time presents a deeply interesting problem in the physiology of reproduction. It means that the reproductive mechanism is not functioning in the normal or usual manner. But just where and what is the change from normal? Is the occurrence Of twins and trip lets due to a departure from the normal in the functioning Of the ovary, or Of the tubes and uterus? Or in a word what is the physiological basis of the occurrence of multiple gestation° It is, of course. An Observation as Old as history itself, that in the great majority (if not all) mammals where one young at a birth is the normal condition multiple gestations occasionally occur. Even in man nearly the slowest in rate Of reproduc tion Of all mammals, there are occasionally as many as 4. 5, or 6 young at a Single birthf'
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Paperback. Zustand: New. Print on Demand. This book examines cases of multiple births in animals that typically give birth to only one offspring at a time, using these instances to shed light on several related biological mysteries. Such occurrences present unique research opportunities to study the physiological mechanisms of reproduction, the determination of sex, the development of secondary sexual characteristics, and the inheritance of inherited traits. The author presents a detailed description of a set of triplets born to a cow with an unusually high rate of multiple births, analyzing their growth, color patterns, and subsequent sexual behavior. This case study and others like it provide valuable insights into the complex mechanisms that govern these aspects of biology, contributing to a deeper understanding of the processes that shape life. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781528024884_0
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Anbieter: PBShop.store US, Wood Dale, IL, USA
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LX-9781528024884
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LX-9781528024884
Anzahl: 15 verfügbar