Homologous
/həʊˈmɑːləɡəs/
Definition 1 of 3
Pro Tip 1/3Biology Focus
Used to describe similarities in living beings due to shared ancestry. 
In biology class, we learned that homologous limbs indicate common evolution.
Pro Tip 2/3Structure Over Function
Emphasizes structure similarity, even if functions differ. 
Although used for flying, the homologous structures of bird wings and human hands are evident.
Pro Tip 3/3Evolutionary Evidence
Suggests evidence of evolution in comparative anatomy. 
Scientists use homologous bones to trace the evolution of vertebrates.