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ANSC 333 Exam 2

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ANSC 333 Exam 2 How is sex determined genetically? - XX = female XY =male How is sex determined phenotypically? - vagina or penis How is sex determined gonadically? - testes or ovaries 5 stages of sexual differentiation - Development of the indifferent gonad Differentiation of the gonad Differentiation of the internal genital organs Differentiation of external genitalia Development of secondary sex characteristics When does development of the indifferent gonad take place? - early embryo When does differentiation of the gonad take place? - late embryo When does differentiation of the internal genital organs take place? - late embryo to fetal When does differentiation of the external genitalia take place? - fetal When does development of secondary sex characteristics take place? - puberty Mesonephros - acts as kidney in early embryo Metanephros - functional kidney in adult Mesonephric duct - Makes male tract Paramesonephric duct - make female tract Where do primordial germ cells originate? - in the yolk sac


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