In rodents the neural circuitry underlying sexually dimorphi

In rodents, the neural circuitry underlying sexually dimorphic sexual behaviors is thought to develop from different precursor structures in males and females. In each sex, typically one of these neural circuits develops and the other one regresses. This is similar to differentiation of the…

a. Gonads in mammals b. Internal reproductive tract in mammals c. External genitalia in mammals d. Song-control system in birds e. All of the above

Solution

c. External genitalia in mammals

The SRY (Sex Determining Region Y) gene encodes a protein known as Sex determining Region Y protein. This protein determines the development of sexual characteristics in a fetus. SRY gene is present on Y chromosome.

The SRY protein controls the expression of particular genes and triggers the process of male gonads development. Thus, this process inhibits the development of female gonads and female reproductive structures while promoting the development of male reproductive structures.

This is similar to the neural circuitry underlying sexually dimorphic sexual behaviors in rodents.