Question

in a breed of dog, the breed for black fur is dominant and the gene for brown fur is recessive. Two dogs with black fur are bred. One of the offspring has brown fur. What is most likely the explanation for the brown fur?
1.) the dog received a mutated gene
2.) the dog only received one gene for fur color
3.) the dog received one gene for brown fur and one gene for black fur

Answer 1

Answer:

3) the dog received one gene for brown and one for black

Answer 2

The most likely reason for the brown fur in one of the offspring is that the dog received one gene for brown fur and one gene for black fur.

WHAT IS HETEROZYGOSITY?

Heterozygosity is a genetic condition whereby a gene is made up of two different alleles.

According to this question, the breed for black fur (B) is dominant and the gene for brown fur (b) is recessive in the breed of dogs. If two dogs with black furs are crossed, one of the offspring has a brown fur.

The reason for the above observation is that the black-furred parents were both heterozygous i.e. Bb, hence, the dog received one gene for brown fur and one gene for black fur.

Learn more about heterozygosity at: https://brainly.com/question/13050360