Question

Dimples (D) are a dominant trait. Two parents with dimples have 3 children, one with dimples

and 2 with no dimples. Determine the genotypes of all the members of this family.

Answer 1

Parent 1 genotype: Dd

Parent 2 genotype: Dd

Child 1 (dimples): Dd or DD

Child 2 (no dimples): dd

Child 3 (no dimples): dd

Step-by-step explanation:

No dimples (d) - recessive

D (dimples) masks d (no dimples), therefore D (dimples) is expressed