R and R Represent Dominant and Recessive Alleles,respectively,for a Gene

question 22

Multiple Choice

R and r represent dominant and recessive alleles,respectively,for a gene that is imprinted. Imprinting of the allele occurs in the male and the allele is silenced when it is imprinted. Which mating would result in a ratio of 1:1 of dominant and recessive phenotypes in the offspring?

• A) rr female x Rr male
• B) RR female x rr male
• C) Rr female x Rr male
• D) rr female x RR male

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