adaptationism

(redirected from Panselectionism)

ad·ap·ta·tion·ism

 (ăd′ăp-tā′shə-nĭz′əm)
n.
An approach in evolutionary biology that assumes that most traits of an organism are adaptations which have evolved solely or chiefly by means of natural selection rather than by means of other processes such as genetic drift.

ad′ap·ta′tion·ist adj. & n.