Human Inheritance
Understanding Main Ideas
Fill in the Punnett squares for (A) dimples, a trait
controlled by a dominant allele, and (B) colorblindness,
a trait controlled by a recessive sex-linked allele.
Then answer the questions that follow. (The father's
alleles are written across the top of the Punnett square.
The mother's alleles are written on the left side.)
5. Does either the mother or the father in A have
dimples?
6. What percentage of children are likely to have
dimples?
