True-Breeding Yellow Guinea Pigs Crossed with True-Breeding White Ones Produce

question 7

Multiple Choice

True-breeding yellow guinea pigs crossed with true-breeding white ones produce only cream-colored offspring.This pattern indicates incomplete dominance.Rough hair is found to be dominant to smooth hair.Select the F1 genotypic and phenotypic ratios of a cross between a smooth,white guinea pig with a homozygous,rough,yellow guinea pig from the following choices.  

• A) rough cream Yy Rr
• B) yellow rough YY R__
• C) cream rough Yy R__
• D) white rough yy R__
• E) cream smooth Yy rr

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