Asked by Demarcus Johnson on Jul 14, 2024
Verified
It has been suggested that the fraternal birth-order effect is a result of
A) erotic plasticity.
B) refractory periods.
C) a maternal immune response.
D) mass-media norms.
Fraternal Birth-Order Effect
A psychological theory suggesting that a male is more likely to be homosexual if he has a greater number of older brothers.
Maternal Immune Response
The immune system's reaction of a pregnant woman to foreign antigens, which can influence pregnancy outcomes.
- Elucidate how biological determinants impact sexual preferences and conduct.
Verified Answer
EG
Emily GiddensJul 17, 2024
Final Answer :
C
Explanation :
The fraternal birth-order effect, which refers to the increasing likelihood of a male being gay or bisexual with each older brother he has, has been found to be related to a maternal immune response to a male-specific protein. This response is thought to occur when a woman becomes pregnant with a male fetus, and her immune system reacts to certain proteins that are produced only by males. This immune response leaves antibodies in the woman's body, which can then affect the development of subsequent male fetuses. Hence, choice C is the best answer.
Learning Objectives
- Elucidate how biological determinants impact sexual preferences and conduct.
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