4 ms·
"It is sex-linked: genetic red-green color blindness affects males much more often than females, because the genes for the red and green color receptors are loc
by hayksaakian 8y ago
"It is sex-linked: genetic red-green color blindness affects males much more often than females, because the genes for the red and green color receptors are located on the X chromosome, of which males have only one and females have two. Females (XX) are red-green color blind only if both their X chromosomes are defective with a similar deficiency, whereas males (XY) are color blind if their single X chromosome is defective.[12]"
via
https://en.wikipedia.org/wiki/Color_blindness#Red-green_color_blindness https://en.wikipedia.org/wiki/Color_blindness#Red-green_colo...
- acomjean 8y agoInteresting. Because one of the X-chromosomes is inactivated in female cells (which have XX). Otherwise it would lead to over expression of X-chromosome Genes (well most anyway).[1] [1]https://ghr.nlm.nih.gov/chromosome/X https://ghr.nlm.nih.gov/chromosome/X (There are some genetic disorders where an organism have 3 of one chromosome. Trisomy its called.) Which X is inactive is somewhat random however so it seems that it reduces the instance of color blindness.