Question

what types of sex chromosomes doe homosexuals have

Answer 1

Two gene variants have been found to be more common in gay men, adding to mounting evidence that sexual orientation is at least partly biologically determined.

We have known for decades that sexual orientation is partly heritable in men, thanks to studies of families in which some people are straight and some people are gay. In 1993, genetic variations in a region on the X chromosome  in men were linked to whether they were heterosexual or homosexual, and in 1995, a region on chromosome 8 was identified. Both findings were confirmed in a study of gay and straight brothers in 2014. However, these studies didn’t home in on any specific genes on this chromosome.