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15 Cards in this Set
- Front
- Back
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Reproductive systems of males and female embryos are identical up to...
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6 weeks of age
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SRY
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sex determining region Y gene, becomes active around 6 weeks after fertilization; results in the production of a regulatory protein--gene activation protein
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CAIS
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Complete Androgen Insensitive Syndrome: SRY gene present on Y chrom., produces normal protein. body doesn't recognize testosterone due to a faulty/missing protein receptor. XY geneotype, female characteristics
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estrogen
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ovaries, adrenal gland, breasts
breast development, ovulation, menstration |
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testosterone
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testes, adrenal gland
body and facial hair, muscle mass and strength |
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sexual dimorphism
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physical differences between males and females
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nondisjunction
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abnormal chromosome movement during meiosis --> change in chromosomal number
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Turner Syndrome
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XO female infertile
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Kleinfelter Syndrome
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XXY male infertile
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XYY Syndrome
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XYY male fertile
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Triple X Syndrome
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XXX male fertile
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Sex determination
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Crocs-> temp 32*(M), 31*(50/50), 30* (F)
Bees/ants -> haploid(M), diploid(F) Fish-> protandry (M->F) protogyny (F->M) |
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CAH
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Congential adrenal hyperplasia-> mutation in gene that metabolizes steroid hormones, cortisol is not produces, over production of testosterone. XX, but male
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cholesterol
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fatty precursor in cell membrane, produces steroid hormones
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Down's Syndrome
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Trisomy 21; 3 copies of 21st chrom.
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