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CHAPTER 3 REVIEW QUESTIONS 1. Infant boys and girls are similar until the 6th week after conception. By the time they are born, they differ in their gonads, internal reproductive systems, and external genitals. How do these three kinds of differences emerge during normal prenatal development? Also, explain why some infants may not be clearly female or clearly male. These three kinds of differences emerge during normal prenatal development through conception and undergo these processes. First, the gonads become develop based on a message sent from Y or X chromosome, allowing the embryo to develop into a male or a female. Then, the fetus releases hormones that play a part in sexual differentiation. Such hormones included are estrogen for females and androgen for the males. Those that are not clearly female or male are called an intersexed individual. One reason someone might be born with this condition is called congenital adrenal hyperplasia and another is called androgen insensitivity syndrome. Congenital adrenal hyperplasia is when genetic females receive as much androgen as males do during prenatal development. Androgen
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  • Fall '12
  • Younkin

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