A human with two X sex chromosomes is usually which gender?
Sex differences in human physiology father. Of these 23 pairs of chromosomes, 22 are autosomes, and one is a sex chromosome. There are two kinds of sex chromosomes–"X" and "Y". In humans and in almost all other mammals, females carry two X chromosomes, designated XX, and males carry one X and one Y, designated XY. A human egg contains only one set of chromosomes (23) and is said to be haploid. Sperm also have only one set of 23 chromosomes and are therefore haploid. When an egg and sperm fuse at fertilization, the two sets of chromosomes come together to form a unique "diploid" individual
Gender "defined" at the cellular level, key features of sexual reproduction operate "within" the structures of the gamete cells themselves. Notably, gametes carry very long molecules called DNA that the biological processes of reproduction can "read" like a book of instructions. In fact, there are typically many of these "books", called "chromosomes". Human gametes usually have 23 chromosomes, 22 of which are common to both sexes. The final chromosomes in the two human gametes are called "sex" chromosomes because of their role in sex determination. Ova always have the same sex chromosome, labelled "X". About half of spermatozoa also have this