orthologous
/ɔːˈθɒləɡəs/Molecular Biol.
adjective
Designating genes (in different genomes) that are derived from a common ancestral sequence (homologous) by phylogenetic descent; related in this way. Also (of a protein or other gene product): encoded by such a gene, or by the same gene in different individuals.
Origin
1970s. From ortho- + -logous. Compare slightly later orthology.