Answer:
Interstitial nucleus of the anterior hypothalamus -3 (INAH -3) regulates the sexual behavior of an individual. This nucleus is more developed and enlarged in males as compared with females.
This nucleus acts as the sexually dimorphic nucleus of humans located in the preoptic area of the hypothalamus. The sexual behavior and orientation of the humans are controlled by the biological component known as INAH -3 in the brain.