Multiple choice

A male, homozygous dominant black dog is mated with a homozygous recessive brown bitch. The black genotype is BB, the brown genotype is bb. The offsprings will be

  1. all brown

  2. all black

  3. 50% black and 50% brown puppies

  4. intermediate in colour
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

All the male gametes will carry the dominant allele B. The female gametes will carry the recessive allele b. This means that the genotype of all the puppies will be Bb. Since the allele for black is dominant, all the puppies will be black.

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