Question

The allele for brown hair (B) is dominant to the allele for blonde hair (b). Suppose two individuals with brown hair are both heterozygotes. If they were to have 5 children, how many possible arrangements would result in 2/5 children having blonde hair?

Answer 1

10 arrangements, although the parents have brown hair, they have a recessive allele for the blonde hair. The two brown heads can make a blonde or brown and or course even a red haired child. In this case the parents with dominant brown hair have a recessive blonde hair giving them a chance to have 10 arrangements to have blonde hair due to their recessive allele.

Step-by-step explanation:

Heterozygous means that to have inherited different forms of a particular gene from each parent. In this case the children will inherit both brown and blonde hair genes.