can someone help me with this? In cats, curled ears result from an allele (C) th

Question

can someone help me with this?

In cats, curled ears result from an allele (C) that is dominant over an allele (c) for normal ears. Black color results from an independently assorting allele (G) that is dominant over an allele for gray (g). A gray cat homozygous for curled ears is mated with a homozygous black cat with normal ears. All the F_1 cats are black and have curled ears. If two of the F_1 cats mate, what phenotypes and proportions are expected in the F_2? All black cats with curled ears 9/16 black cats, curled ears: 3/16 black cats, normal ears: 3/16 gray cats, curled ears: and 1/16 gray cats, normal ears 1/4 black cats, curled ears, 1/4 black cats, normal ears: 1/4 gray cats, curled ears: and 1/4 gray cats, normal ears 9/16 gray cats, normal ears: 3/16 gray cats, curled ears: 3/16 black cats, normal ears: and 1/16 black cats, curled ears All gray cats: normal ears

Explanation / Answer

As given :

C = Curled ears, c = normal ears, G = Black cat, g= gray cat

Black G is dominant and C curled ears is dominant.

ggCC     X     GGcc

In F1 genration : GgCc means black and curled

then in F2 genration:

GgCc    X    GgCc

then while using checker board

9: Black and curled

3 Black and normal

3 gray and curled

1 gray and normal

is found so answer 2 is correct.

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