Describe the various stimuli that elicit maternal behavior, ...

[scienceeasy]

Describe the various stimuli that elicit maternal behavior, including that of hormones.
 
  What will be an ideal response?

Question 2

Describe two lines of evidence that support a biological basis for homosexuality.
 
  What will be an ideal response?

[IRincones]

Answer to Question 1

Answer: Birth elicits maternal behaviors (grooming, cleaning, consumption of the placenta), which may reflect birth canal distention, as well as the stimuli associated with the pups
(olfactory, auditory cues). The latter alone will elicit maternal behavior in a virgin rodent. Hormones affect maternal behavior but do not organize these (males will show such behaviors, and maternal behaviors occur in virgin mice).

Answer to Question 2

Answer: Twin studies provide powerful evidence for a biological basis for homosexuality with identical twins showing higher concordance values than do fraternal twins, and this effect is noted as well for female homosexuals. A second line of evidence is that androgenization may play a role in that women with congenital adrenal hyperplasia show increased rates of homosexuality/bisexuality. Additional support comes from studies in which childhood experiences were not related to homosexuality.

[scienceeasy]

TYSM

[Sarahjh]

Excellent