Cichlid Room Companion

TERM: Description of glossary term.


Kontext: Evolution Phylogeny

homology

In biology, homology is the existence of shared ancestry between a pair of structures, or genes, in different species, e.g. the pectoral fins in fish and arms in humans. Evolutionary theory explains the existence of homologous structures adapted to different purposes as the result of descent with modification from a common ancestor

Wikipedia