Some people can roll their tongues into tubes and some can't. Tongue-rolling ability and inability to tongue roll are two versions of the same gene. Each version is called
A)a genotype.
B)a phenotype.
C)a reaction range.
D)an allele.
E)cytosines.

Question

Quizplus · Accepted Answer

An allele is a variant form of a gene. In the context of tongue-rolling ability, the ability and inability to roll the tongue are determined by different alleles of the same gene.

Some People Can Roll Their Tongues into Tubes and Some