n humans, the allele for attached ear lobes (e) is recessive to the allele for free ear lobes (E).

If both of Lisa's parents have attached ear lobes, then
A. Lisa may have either attached ear lobes or free ear lobes.
B. Lisa must have free ear lobes.
C. Lisa must have her ears pierced.
D. Lisa must have attached ear lobes.

Question

n humans, the allele for attached ear lobes (e) is recessive to the allele for free ear lobes (E). 

If both of Lisa's parents have attached ear lobes, then 
        A. 	 Lisa may have either attached ear lobes or free ear lobes.
	B. 	 Lisa must have free ear lobes.
	C. 	 Lisa must have her ears pierced.
	D. 	 Lisa must have attached ear lobes.

anonymous · Answer

D because both of her parents would be ee, so that is the only combination of alleles that she can recieve.