Male Human Sex Chromosomes XY SEM Science Image

Ref: 80201281-80201309-xy



Male Human Sex Chromosomes X and Y (Pair 23), scanning electron micrograph (SEM). There are 23 pairs of chromosomes in most normal human cells. These are allocated pairs 1 - 22 with pair 23 being the sex chromosomes, either xx for females and xy for males. Magnification x70000