In house cats, eye color can be gray, blue, green, or brown; each variation bree
ID: 42214 • Letter: I
Question
In house cats, eye color can be gray, blue, green, or brown; each variation breeds true. Homozygous parents were bred and the following offspring were produced:
Cross A: P1= Green & gray F1= All green F2= 3/4 green, 1/4 gray
Cross B: P1= Green & brown F1= All green F2= 3/4 green, 1/4 brown
Cross C: P1= Gray & brown F1= All green F2= 9/16 green, 3/16 brown, 3/16 gray, 1/16 blue
This is the effects of two gene pairs. Define symbols and identify which genotypes produce which phenotypes.
Green- ?
Gray- ?
Brown- ?
Blue- ?
Explanation / Answer
green=AA, gray=aa, brown=aA, blue=aa
green is dominant to grey, blue is recessive trait and brown is codiminant or inclompletely dominant phenotype
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