Question

This black dog mates and has puppies with a solid white dog. The white dog has the genotype bb. The match produces a litter of 8 puppies: 6 black and 2 white. What is the most likely genotype of this black dog?
A) B B) BB C) Bb D) bb

Answer 1

Answer:

Answer should be (C)

Explanation:

it cannot be BB ..

because if it is BB then only black dogs will be produced .. (because black is dominant over white) no white dogs will be produced...

so it must be Bb

because

According to law of dominant trait ...

dominant trait (B) expresses itself over recessive trait (b)

so at least 1 b will be required for producing white dogs because it is a recessive trait ...

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