~BN23 hormones & sexual development

~BN23 hormones & sexual development - Hormones...

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Hormones & Sexual Development Lecture 23
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Sexual Dimorphism Two forms male and female What determines your sex? ~
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Genetic determinants XX or XY XO ? Turner’s syndrome no ovaries default = FEMALE MALE Override genetic program ~
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Genotype complete genetic makeup Phenotype expression of genes ~ Genotypic vs Phenotypic Sex
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Sexual Differentiation of Body Chromosomal sex - XX or XY single gene S ex-Determining R egion on the Y Chromosome SRY ~
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SRY Turns on switch testes development XX + SRY? male XY - SRY female ~
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Development of Reproductive Organs
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Primordial Gonad Indifferent gonad Potential for both sexes Medulla testes Cortex ovaries ~
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Differentiation at 6 weeks SRY medulla testes No SRY cortex ovaries ~
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Internal Reproductive Ducts < 6 weeks 2 sets Müllerian system = female upper vagina uterus fallopian tubes ~
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~BN23 hormones &amp;amp; sexual development - Hormones...

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