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What is Homology in Biology? PDF | Download eBooks

Learn Homology definition in biology with explanation to study “What is Homology”. Study homology explanation with biology terms to review biology course for online degree programs.

Homology Definition

  • Similarity resulting from common ancestry is known as homology.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson

Homology Explanation

Homology is the existence of shared ancestry between a pair of structures, or genes, in different taxa. Foe example homologues structures in dolphins and humans and bats. Another example of homology is the sequence homology between protein or DNA sequences is similarly defined in terms of shared ancestry. Two segments of DNA can have shared ancestry based on duplication events or speciation events.

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