For people, curly hair is dominant and straight hair is recessive. Genetics problem: Mom has straight hair and Dad is homozygous for curly hair. The chance that their child will have curly hair is:

Question

Quizplus · Accepted Answer

Since Dad is homozygous for curly hair, he can only pass on alleles for curly hair. Mom, with straight hair, is homozygous recessive and can only pass on alleles for straight hair. Therefore, all their children will receive one allele for curly hair from Dad and one for straight hair from Mom, resulting in curly hair due to its dominant nature.

For People, Curly Hair Is Dominant and Straight Hair Is