Psychology 2035A/B Lecture Notes - Lecture 4: Skipping Rope, Resocialization, X Chromosome

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Sex & gender - becoming male or female: the role of biology and socialization. Part 1: reproductive biology (prenatal sexual differentiation) see also ch. Mother"s egg, containing 23 chromosomes, ( x" sex chromosome) Father"s sperm, also containing 23 chromosomes, ( x" or y" sex chromosome) If x sperm fertilizes egg: genetic female (xx) If y sperm fertilizes egg: genetic male (xy) The rst step to becoming male or female: the gonadal factor (development of reproductive organs: testes or ovaries) Genetic females (xx); with tiny piece of y chromosome attached (xxy) Y is big enough to stimulate development of testes, not big enough to inhibit development of ovaries (therefore both: the hormonal factor (development of sex organs: penis or clitoris) If the individual has testes, large quantities of androgens are produced. When androgens are present, penis develops (this is sometimes called the adam. When androgens are absent, clitoris develops (this is sometimes called the eve principle".

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