Question #6423275Single Choice

Biology

Question

In guinea pigs, black fur (B) is dominant to brown fur (b), and rough coat (R) is dominant to smooth coat (r). A black, rough-coated guinea pig with the genotype BbRr is crossed with a brown, smooth-coated guinea pig with the genotype bbrr. What is the expected phenotypic ratio of their offspring?

Options

1 black, rough : 1 black, smooth : 1 brown, rough : 1 brown, smooth

9 black, rough : 3 black, smooth : 3 brown, rough : 1 brown, smooth

3 black, rough : 3 black, smooth : 1 brown, rough : 1 brown, smooth

1 black, rough : 1 black, smooth : 2 brown, smooth

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