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12 Cards in this Set
- Front
- Back
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Explain why X chromosome related diseases (red-green color blindness, hemophilia, Duchene muscular dystrophy, etc.) appear almost exclusively in males.
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Females have two X chromosomes, so that if one is defective, the corresponding gene in the other will "take over." Males, however, only have one X, and the Y has 1/30 of the genes of the X.
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What sex will an XXY human be, phenotypically? What is this condition called?
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Male, Klinefelter's
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What does the SRY region of DNA produce, and how does this product work?
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TDF, or testis-determining factor, acts as a transcription factor and regulates the expression of genes on other chromosomes.
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What is the main hormone of each of the following:
1) Androgens 2) Estrogens |
1) Testosterone
2) Estrodiol |
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Name two gonadotropins.
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LH (Luteinizing Hormone) and FSH (Follicle-Stimulating Hormone)
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The _____ (brain region) releases ____ (chemical) to stimulate the release of LH and FSH from the anterior pituitary
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Hypothalamus, GnRH (Gonadotropin Releasing Hormone)
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In males, what do FSH (Follicle-Stimulating Hormones) and LH (Luteinizing Hormone) do?
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FSH triggers testosterone production in the testes. LH and testoterone contribute to sperm maturation.
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What do FSH (Follicle-Stimulating Hormone) and LH (Luteinizing Hormone) do in females?
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Both trigger the release of estrogen from the ovaries and regulate menstrual cycles.
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Monogamous prairie voles have higher concentrations of ___ receptors in the ___ ___ than do non-bonding montane voles.
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Vasopressin, ventral palladium
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How does one reverse the mating behavior of montane and prairie voles?
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One administers a vasopressin antagonist to the prairie vole and adds a vasopressin receptor gene to the ventral palladium of the montane vole.
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What did LeVay find in his postmortem studies of the brain tissue of people with different sexual orientations?
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He found that straight men had a larger INAH-3 (Interstitial Nuclei of the Anterior Hypothalamus) than did gay men or straight women.
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Who conducted the study of the sexual orientation of siblings who were raised together, and what did this particular study suggest?
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Bailey and Pillard. That there might be both a nature and a nurture component to sexuality.
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