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12 Cards in this Set

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