By 1900, Mendel's work was finally appreciatednamely, his view that diploid cells have two units for each trait and the units segregate during gamete formation. B. Autosomes and Sex Chromosomes 1. Gender is determined by sex chromosomes .
Human females have two X chromosomes.
Human males have one X and one Y chromosome. All normal human eggs carry only one X chromosome. All nonsex-determining genes are the same in males and females and are called autosomes . Nonsexual traits are also coded for on the sex chromosomes. Linkage is the tendency of genes located on the same chromosome to be transmitted together in inheritance.