Homologous genes
A) are adjacent to one another on the same chromosome.
B) never involve whole sets (clusters) of genes.
C) are found exclusively in mammals.
D) evolved from a gene present in a common ancestor.
E) are expressed at the same time in an organism.

Question

Quizplus · Accepted Answer

Homologous genes evolved from a gene present in a common ancestor, meaning they share a common ancestral origin. They may be found on the same chromosome or on different ones, and they can involve sets of genes (such as gene families). Homologous genes are not exclusive to mammals and they may or may not be expressed at the same time in an organism.

Homologous Genes