Abstract
This paper explores an important type of biological explanation called ‘homology thinking.’ Homology thinking explains the properties of a homologue by citing the history of a homologue. Homology thinking is significant in several ways.
First, it offers more detailed explanations of biological phenomena than correspondinganalogy explanations. Second, it provides an important explanation ofcharacter similarity and difference. Third, homology thinking offers a promising account of multiple realizability in biology.