xxy is a gene on the y chromosome that determines maleness.
xxy is a gene on the y chromosome that determines maleness.
a gene on the y chromosome that determines maleness is?
xxy
section::::chromosomal systems.:xx/xy sex chromosomes.:y-centered sex determination.









































some species (including humans) have a gene sry on the y chromosome that determines maleness. members of sry-reliant species can have uncommon xy chromosomal combinations such as xxy and still live.









































human sex is determined by the presence or absence of a y chromosome with a functional sry gene. once the sry gene is activated, cells create testosterone and anti-müllerian hormone which typically ensures the development of a single, male reproductive system. in typical xx embryos, cells secrete estrogen, which drives the body toward the female pathway.
sex-determination system
y-linked inheritance occurs when a gene, trait, or disorder is transferred through the y chromosome. since y chromosomes can only be found in males, y linked traits are only passed on from father to son. the testis determining factor, which is located on the y chromosome, determines the maleness of individuals. besides the maleness inherited in the y-chromosome there are no other found y-linked characteristics.









































section::::genetic differences and inheritance patterns.:pedigrees analysis.
human genetics