chapter 4 gender - Biology Chapter 4"The Aggressive Egg...

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Biology Chapter 4 & “The Aggressive Egg”
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Determining and Differentiating  Sex There is not a  single  measure that determines  whether someone is a boy or girl, man or woman. There is not always a perfect correspondence  between a person’s genes and the results of those  genes. 
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Hormones Hormones Substances released from endocrine glands Receptors Located on organs & are sensitive to specific hormones Steroid hormones  Relate to reproduction and differences between the sexes Androgens Estrogens
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Steroid Hormones Androgens Produced by: Testes Ovaries Adrenal glands Estrogens Produced by: Ovaries Placenta (during gestation of both males and females) (indirectly) Being converted from androgens in both males 
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The Endocrine System Gonads Reproductive organs Ovaries Testes Hypothalamus and pituitary gland Essential in regulating the production of sex hormones
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