With regard to alleles that encode different forms of the phenylthiocarbamide taste receptor in humans, which options are phenotypes?
A)taster
B)PAV/PAV
C)nontaster
D)PAV/AVI
E)aversion to broccoli

Question

Quizplus · Accepted Answer

Phenotypes are observable traits resulting from the interaction between an organism's genotype and its environment. In this case, the alleles that encode different forms of the phenylthiocarbamide taste receptor result in varying responses to the chemical phenylthiocarbamide, which can be observed as different taste sensations. Thus, the taster and nontaster options are both phenotypes. Additionally, an aversion to broccoli can also be considered a phenotype as it is an observable trait resulting from an individual's response to the taste of broccoli, which is influenced by the same genetic variation. The PAV/PAV and PAV/AVI options are genotypes, not phenotypes, as they refer to specific combinations of alleles rather than observable traits.

With Regard to Alleles That Encode Different Forms of the Phenylthiocarbamide