In order for male differentiation to occur during embryonic development, testosterone must be secreted from the testes. What stimulates the secretion of testosterone during embryonic development?

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#Question id: 4700

#Zoology

Which of the following is not an observation or inference on which natural selection is based?

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#Question id: 4701

#Zoology

Charles Darwin discussed all of the following EXCEPT:

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#Question id: 4702

#Zoology

Which of the following is correct match?

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#Question id: 4705

#Zoology

Darwin and Wallace's theory of evolution by natural selection was revolutionary because it ________.

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#Question id: 4706

#Zoology

Which of the following statements best explains why modification or change in an organ or tissue during the lifetime of an individual is not inherited?

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#Question id: 4707

#Zoology

For which one of the following observations were both Lamarck's hypothesis and Darwin's hypothesis in complete agreement?