In pigs, the allele for a wavy, rough coat (R) is dominant to the allele for a soft, fine coat (r). A rough coat boar and a soft coat sow mate. They produce several litters, 50% are rough coat and 50% are smooth coat. What were the genotypes of the parents?

Question

Biology

Aron Prince

28 August, 12:12

In pigs, the allele for a wavy, rough coat (R) is dominant to the allele for a soft, fine coat (r). A rough coat boar and a soft coat sow mate. They produce several litters, 50% are rough coat and 50% are smooth coat. What were the genotypes of the parents?

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Answers (1)

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Arthur Cordova · Answer 1

1. Do a pun-net square.

R r

r

r

2. The offspring would be Rr, rr, Rr, rr

3. 2 of them are heterozygous (Rr), which means they would be most likely rough coats

4. Two of them are homozygous for short hair (rr) which means they are going to be soft hair.

5. Your answer is

Rr, rr