Definitions

1. adjective

Having the same structure or organization; having a common evolutionary origin.

“The homologous structures of the human and chimpanzee genomes reveal a significant degree of similarity.”

2. noun

A pair of genes or chromosomes that are identical in structure and function, often resulting from a common ancestral gene or chromosome.

“The two homologous chromosomes in the fertilized egg cell will eventually separate during meiosis.”