In cattle, having horns is recessive to hornless. Coat color is controlled by in

Question

In cattle, having horns is recessive to hornless. Coat color is controlled by incompletely dominant genes: RR for red, rr for white, and Rr for roan (a combination between the other two genotypes). If two heterozygous roan-hornless are mated (heterozygous for each gene), what kinds of offspring are expected?

3/16 red and hornless, 3/16 red and with horns, 4/16 roan and hornless, 3/16 roan and with horns, 2/16 white and hornless, 1/16 white and with horns

9/16 red and hornless, 3/16 red and with horns, 3/16 white and hornless, 1/16 white and with horns

4/16 red and hornless, 4/16 red and with horns, 4/16 white and hornless, 4/16 white and with horns

4/16 red and hornless, 2/16 red and with horns, 4/16 roan and hornless, 2/16 roan and with horns, 2/16 white and hornless, 2/16 white and with horns

3/16 red and hornless, 1/16 red and with horns, 6/16 roan and hornless, 2/16 roan and with horns, 3/16 white and hornless, 1/16 white and with horns

3/16 red and hornless, 3/16 red and with horns, 4/16 roan and hornless, 3/16 roan and with horns, 2/16 white and hornless, 1/16 white and with horns

9/16 red and hornless, 3/16 red and with horns, 3/16 white and hornless, 1/16 white and with horns

4/16 red and hornless, 4/16 red and with horns, 4/16 white and hornless, 4/16 white and with horns

4/16 red and hornless, 2/16 red and with horns, 4/16 roan and hornless, 2/16 roan and with horns, 2/16 white and hornless, 2/16 white and with horns

3/16 red and hornless, 1/16 red and with horns, 6/16 roan and hornless, 2/16 roan and with horns, 3/16 white and hornless, 1/16 white and with horns

Explanation / Answer

E is the right answer

Parents will be RrHh x RrHh

Then, RH, Rh, rH, rh gametes

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