A(n)________________ Gene Has a Locus on Both the X-And Y-Chromosome

Question

A(n)________________ gene has a locus on both the X-and Y-chromosome
A) Autosomal
B) Psedoautosomal
C) X-linked
D) Y-linked
E) None of these

Accepted Answer

A gene that has a locus on both the X and Y chromosomes is called a pseudoautosomal gene. This is because the X and Y chromosomes contain very few homologous regions, but the pseudoautosomal region is a small region where the X and Y chromosomes do share homologous sequences. Therefore, genes located in this region can be inherited like autosomal genes, and their expression is not limited by the sex of the individual.