The Determination of Sex in Animal Development
The Determination of Sex in Animal Development
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In our eReader you can find the full English version of the book. Read The Determination of Sex in Animal Development Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Determination of Sex in Animal Development
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microsc. Sc, 1891, p. 72).
The identity in number is, however, the sole resemblance between Hartoq's theory of the "origin of sex" and the account of the determination of sex, given here. Moreover, Hartog makes the meso- gametes disappear as useless') organisms, and thus he reduces the actual number to two, which is not in accordance with the facts. Nor is any attempt made to show how the differentiation is carried on from generation to generation. It has been indicated here how the male-eggs a...s a rule only provide for a male embryo and its set of male gametes, the spermatozoa : whereas the female-eggs make provision 1) With very few exceptions, and of these Ascaris megalocephala and Salamandra maculosa may be named, there is hardly a dioecious animal yet investigated, of which it can with certainty be said, that a second form of sperm is completely absent. In the two apparent ones mentioned the very numerous degenerative spermatogonia and spermato- cytes suffice to account for the missing second non-functional sperm.
What to read after The Determination of Sex in Animal Development?
You can find similar books in the "Read Also" column, or choose other free books by Beard, John, 1858- to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
microsc. Sc, 1891, p. 72).
The identity in number is, however, the sole resemblance between Hartoq's theory of the "origin of sex" and the account of the determination of sex, given here. Moreover, Hartog makes the meso- gametes disappear as useless') organisms, and thus he reduces the actual number to two, which is not in accordance with the facts. Nor is any attempt made to show how the differentiation is carried on from generation to generation. It has been indicated here how the male-eggs a...s a rule only provide for a male embryo and its set of male gametes, the spermatozoa : whereas the female-eggs make provision 1) With very few exceptions, and of these Ascaris megalocephala and Salamandra maculosa may be named, there is hardly a dioecious animal yet investigated, of which it can with certainty be said, that a second form of sperm is completely absent. In the two apparent ones mentioned the very numerous degenerative spermatogonia and spermato- cytes suffice to account for the missing second non-functional sperm.
What to read after The Determination of Sex in Animal Development?
You can find similar books in the "Read Also" column, or choose other free books by Beard, John, 1858- to read onlineMoreLess
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