Disruptive selection Notes: Definitions & Explanations PDF | Download eBooks
Study Disruptive selection lecture notes PDF with biology definitions and explanation to study What is Disruptive selection?. Study disruptive selection explanation with biology terms to review biology course for online degree programs.
Disruptive selection Definition:
Disruptive selection occurs when conditions favor individuals at both extremes of a phenotypic range over individuals with intermediate phenotypes.
Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson
Disruptive selection Notes:
A good example of disruptive selection is a population of black-bellied seed cracker finches in Cameroon whose members display two distinctly different beak sizes. Small-billed birds feed mainly on soft seeds, whereas large-billed birds specialize in cracking hard seeds. It appears that birds with intermediate-sized bills are relatively inefficient at cracking both types of seeds and thus have lower relative fitness and survive less.
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