If a pure-breeding long-tail cat (LL) is crossed with a pure-breeding cat with no tail (rumpy, ll), and a cat with a short tail (stumpy) is produced, the simplest explanation is
A)a mutation.
B)an X-linked gene.
C)an incompletely dominant gene.
D)a lethal gene.
E)chromosomal aberration.

Question

Quizplus · Accepted Answer

The production of a cat with a short tail suggests that the gene for tail length is incompletely dominant, meaning that the heterozygous offspring (Ll) have an intermediate phenotype (short tail) between the two homozygous parents (LL and ll).

If a Pure-Breeding Long-Tail Cat (LL) Is Crossed with a Pure-Breeding