JOE asked in Science & MathematicsBiology · 4 weeks ago

Genetics Question?

Please help me set this up 

You find two wolves in the wild, one with gold eyes and one with blue eyes. After crossing them they have seven pups: six with gold eyes and one with blue eyes. What are the genotypes of each of the parents and the each of the pups?

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  • 4 weeks ago

    If this is the only information you have available to you, you can't absolutely determine genotypes, because you cannot tell from this one cross which trait is dominant and which is recessive. So, I'm guessing that you have other information available to you.

    Based on JUST this one cross, you have to options:

    A. gold eyes is dominant (G= dominant gold allele) and blue is recessive (g = recessive blue allele). In this case, the gold wolf would be Gg and the blue wolf would be gg. The gold wolf pups would all be Gg and the blue pup would be gg.

    B. Blue is dominant and gold is recessive. Here letting B = blue allele and g = gold allele, the blue wolf would be heterozygous Bb and the gold wolf would be bb. The gold pups would be bb and the blue pup would be Bb.

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