Suppose "A" is a dominant gene for the ability to curl the tongue lengthwise, and "a" is a recessive gene for inability to do so. Which of the following couples can be certain that all their children will be able to curl their tongue lengthwise?

Question

Quizplus · Accepted Answer

The father has two recessive alleles (aa) and the mother has two dominant alleles (AA), which means all their children will inherit one dominant allele from the mother and one recessive allele from the father, resulting in the ability to curl their tongue lengthwise (Aa).

Suppose "A" Is a Dominant Gene for the Ability to Curl