While there have only been a few studies of the brain structures of same and different sex-orientation, the most promising and controversial by LeVay have found differences in the ___________ that may be correlated with sexual orientation.
a. cerebral cortex
b. hypothalamus
c. pineal gland
d. cingulate
Question 2
With regard to the concept of a gay gene, the textbook concludes that
a. there is strong evidence that a gene or small set of genes is responsible for a large percentage of the variance in the cause of same-sex sexual preference.
b. there is weak to moderate evidence that a gene or small set of genes is responsible for a large percentage of the variance in the cause of same-sex sexual preference.
c. any gene that is associated with sexual orientation will only confer a predisposition rather than definitively cause same-sex orientation.
d. there is currently no evidence to support the concept of genetic component to the cause of same sex orientation.
Lateral View of the human brain in cross section
the brain
Structures formed by phospholipids in an aqueous environment: Micelle
A rat pressing a lever to obtain rewarding brain stimulation.
Structures of G proteins
Posterior view of midbrain in relation to brain stem