What must be true about the earlobes of Alice’s parents?

The question is incomplete and the complete question has been attached.

The genotype of the Alice is ee.

Explanation:

In the given question that Alice has unattached earlobe which is a recessive trait. The trait is recessive therefore the trait is determined only when both the copies of the allele is present.

The allele for attached earlobe (dominant) is E and unattached earlobe ( recessive) is e.

The recessive condition means the trait will be expressed when ee condition is present therefore the Alice will have the ee genotype. This condition is present only in the second punnett square.

Thus,the genotye of Alice is ee.