homologous - Word for the Day

homologous · : hO-'mä-l&-g&s, h&- · adjective

1 a) : having the same relative position, value, or structure: as (1) : exhibiting biological homolgoy (2) : having the same or allelic genes with genetic loci usually arranged in the same order
b) : belonging to or consisting of a chemical series whose successive members have a regular difference in composition especially of one methylene group
2 : derived from or developed in response to organisms of the same species

homologue · noun

: something (as a chemical compound or a chromosome) which is homologous

Etymology: Greek homologos agreeing, from hom- + legein to say – see legend