Which kind of cat is heterozygous it has to be white.

Often the heteroptic pupil occurs in white cats, and common breeds include the Chinese Linqing lion cat and Angora cat hybrids, Persian cats and lion cats.

Heterochromatic pupils, also known as mandarin duck eyes, are usually blue in one eye and yellow in the other, and not only are the colors of the two eyes different, but the visual acuity is also not the same. Although humans look at the heterochromatic pupils of the cat feel novelty, but as the heterochromatic cat itself, but often accompanied by deafness this defect. This defect is mostly related to genetic factors.

Extended information:

Iris heterochromia

The appearance of iris heterochromia can be divided into congenital and acquired.

Congenital heterochromia is a condition in which the irises of the two eyes are different in color, and may be genetically related. Since the color of the iris is affected by heredity, if one parent has blue eyes and the other has gray eyes, the offspring may have a pair of blue eyes or a pair of gray eyes, or one eye may have a blue iris and the other may have a gray iris.

The condition can be caused by Horner Syndrome or iris trichiasis, which causes damage to the iris and shrinks it. It may also be caused by a lack of iris pigmentation or be genetically related.

Baidu Encyclopedia - Mandarin Eyes