Hormones And Heredity
Hormones And Heredity
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In themoths developed from the castrated larvae there was no alteration in themale characters, and in the females the only difference was that some ofthem were slightly darker than the normal. Meisenheimer and Kopee afterhim claim to have grafted ovaries into males and testes into females, withthe result that the transplanted organs remained alive and grew, and insome cases at least became connected with the genital ducts. Even in thesecases the moth when developed showed the original character...s of the sex towhich belonged the caterpillar from which it came, although it wascarrying a gonad of the opposite sex. It will be seen that these resultsare the direct opposite of those obtained by Steinach on Mammals. We haveno evidence that the darker colour of the normal male in this case isadaptive, or due to external stimuli, but the feathering of the antennaeis generally believed to constitute a greater development of the olfactorysense organs, and is therefore adaptive, enabling the male to find thefemale.
What to read after Hormones And Heredity?
You can find similar books in the "Read Also" column, or choose other free books by Jt Cunningham to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In themoths developed from the castrated larvae there was no alteration in themale characters, and in the females the only difference was that some ofthem were slightly darker than the normal. Meisenheimer and Kopee afterhim claim to have grafted ovaries into males and testes into females, withthe result that the transplanted organs remained alive and grew, and insome cases at least became connected with the genital ducts. Even in thesecases the moth when developed showed the original character...s of the sex towhich belonged the caterpillar from which it came, although it wascarrying a gonad of the opposite sex. It will be seen that these resultsare the direct opposite of those obtained by Steinach on Mammals. We haveno evidence that the darker colour of the normal male in this case isadaptive, or due to external stimuli, but the feathering of the antennaeis generally believed to constitute a greater development of the olfactorysense organs, and is therefore adaptive, enabling the male to find thefemale.
What to read after Hormones And Heredity?
You can find similar books in the "Read Also" column, or choose other free books by Jt Cunningham to read onlineMoreLess
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