How do males and females produce an equal dose from X chromosome?
Females have 2 Males have 1 Males use their X Females use only one X Inactivated X in females is visible in interphase as a distinct dark body. This is called the Barr body. Mary Lyons hypothesis Females inactivate one or the other X well into the development process. Females are mosaics Sex linked genes genes that are on the sex chromosomes. Hemophilia Color blindness Calico cats always female Male calico cats are very rare and are Kleinfelters Syndrome In the case of female calico cats the mosaic pattern is seen on the hair color: orange and black. Since males get only one gene, they are either orange or black. Olympics females must prove they are female with 2 Xs.
