Genetics question You are interested in studying the inherit

Genetics question

You are interested in studying the inheritance patterns of various traits in the squirrels on campus, so you decide to cross gray, bushy-tailed squirrels with red, skinny-tailed squirrels. In the F2 generation, there are 36 squirrels that have gray fur and bushy tails, 12 that have gray fur and skinny tails, 12 that have red fur and bushy tails, and 4 that have red fur and skinny tails. Which alleles are dominant? gray fur and skinny tails red fur and skinny tails gray fur and bushy tails red fur and bushy tails

Solution

Answer - Option C - Gray fur and bushy tails.

The phenotype of dominant trait will be of higher number, since it requires only one copy of the allele for its expression. In this case cross between gray, bushy tailed squirrels and red skinny tailed squirrels have yielded 36 squirrels which had gray fur and bushy tails, hence the answer is option C - Gray fur and bushy tail is dominant.