Straight hair is dominant to curly hair. 2 heterozygous parents have a baby. What percentage of the offspring will have curly hair? HINT draw a punette square to help you.

Question

A. 25%

B. 50%

C. 75%

D. 100%

Answer 1

Let S = dominant gene for straight hair and c = recessive gene for curly hair. Each parent would be Sc

Mom S c

Dad

S SS Sc

c Sc cc

1 of 4 or 25%