Asked by Andrew Booms on Jun 06, 2024
Verified
A mother's immune system may have a defensive response to substances produced by male fetuses.This is most likely to contribute to
A) erotic plasticity.
B) female orgasmic disorder.
C) sexually transmitted infections.
D) the fraternal birth-order effect.
Immune System
The body’s defense mechanism against pathogens, comprising physical barriers, cells, and proteins that work together to prevent and fight infections.
Fraternal Birth-Order Effect
A phenomenon in which the chances of a man being homosexual are thought to increase with the number of older brothers he has.
Male Fetuses
Male fetuses are unborn offspring in the process of development, from the time of conception until birth, that are genetically characterized as male based on sex chromosomes.
- Acquire knowledge about the significance of the immune system in determining sexual orientation through the mechanism of fraternal birth order.
Verified Answer
FH
febrian haryadiJun 08, 2024
Final Answer :
D
Explanation :
The fraternal birth-order effect refers to the phenomenon where the more older brothers a male has, the greater the likelihood that he will be homosexual. One theory to explain this effect is the maternal immune hypothesis, which suggests that a mother's immune system may have a defensive response to substances produced by male fetuses. This immune response may then affect the developing brain of the male fetus, leading to a greater likelihood of homosexuality.
Learning Objectives
- Acquire knowledge about the significance of the immune system in determining sexual orientation through the mechanism of fraternal birth order.