Problems of Fertilization (Genes, Cells, and Organisms) - Hardcover

Lillie, Frank

Hardcover

ISBN 10: 0824013824 ISBN 13: 9780824013820

Publisher: Taylor & Francis, 1988

Synopsis

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1919 Excerpt: ... CHAPTER V THE PHYSIOLOGY OF FERTILIZATION I. INTRODUCTION It is commonly said that there are two main problems in the physiology of fertilization, viz.: the initiation of development, or activation, and biparental inheritance; but these are more properly results of fertilization. Indeed so long as we regard fertilization primarily as a function of prospective significance in the life of the organism we shall miss the more specific aspects of the process. Once fertilization is accomplished development and inheritance may be left to look after themselves. Fertilization must be regarded as a reaction possessing very definite biological and biochemical characters. But it is not a single reaction in either a biological or chemical sense; it is rather a series of reactions which cannot be regarded as complete until full capacity for development and inheritance is attained by the zygote. Fertilization may therefore be partial, which may be indicated by early cessation of the developmental process or deficiency of developmental energy. It is obvious that partial fertilization will furnish an important means of analysis. The reactions of fertilization form an irreversible series, though it is conceivable that some of them taken singly may be reversible. Spermatozoa have no effect on already fertilized eggs and do not penetrate into them; this condition arises very early in the fertilization reactions, so that the entrance of more than one spermatozoon does not usually occur. With reference to reversibility the ovum differs from most cells. A nerve cell or a gland cell or a muscle cell after functioning returns to the functional condition again; but, so far as our evidence goes, this is not true of the egg cell or of the spermatozoon; their functioning is essentially...

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Product Description

This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.

Edition details

• Publisher: Taylor & Francis
• Publication date: 1988
• Language: English
• ISBN 10: 0824013824
• ISBN 13: 9780824013820
• Binding: Hardcover