In cats, red and black genes are allelic and localized on the X = chromosome. They are transmitted independently, and therefore heterozygotes are mottled. 1) How many different phenotypes can be obtained by crossing a tricolor cat with a black cat? 2) What is the probability (%) of the appearance of a tricolor cat?
X – black color
X ° – red color
X ° X – motley color
Genotypes of parents and offspring
1 motley cat: 1 black cat: 1 red cat: 1 black cat
X ° X
||X °, X
||X ° X motley, XX black, X ° Y red, XY black
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