Males with one copy of an X-linked gene are said to be ________ for that gene.
A)homozygous
B)heteroallelic
C)heterozygous
D)hemizygous
E)deficient

Question

Quizplus · Accepted Answer

Males have only one X chromosome, so for X-linked genes, they have only one copy. This makes them hemizygous, not homozygous or heterozygous, because those terms imply the presence of two alleles for a gene.

Males with One Copy of an X-Linked Gene Are Said