Michael is color-blind. his gene for color blindness is most likely a

The right answer is: recessive gene on his X chromosome.

The structure of visual pigments is coded by three genes whose pathology modifies pigments and determines color blindness. The two genes coding for the L-cone and M-cone pigments are located on the long arm of the X chromosome.

Since it's a recessive disease. In the female, carrying two X chromosomes, the genes are in duplicate, while in humans, the carrier of a single X chromosome, the gene is in single copy and its color vision is determined solely by the X chromosome received from its mother.

An X chromosome can be pathological in two ways: either because one of the genes is abnormal or because it is absent.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.