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In animals, the sex of an individual is generally <a href="c4c.htm">meet uk</a>,
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fertilizes the egg, the offspring will be male (XY). In some animals this rule
is reversed (see Genetics). The term primary sexual characteristics denotes
the kind of gamete the gonad produces: the ovary produces egg cells in the female,
and the testis produces sperm cells in the male. The term secondary sexual characteristics
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Sex HormonesPrint section In mammals, the hormones that influence sexual differentiation
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