heterochronous

heterochrony

[het-uh-rok-ruh-nee]
noun Biology.
a genetic shift in timing of the development of a tissue or anatomical part, or in the onset of a physiological process, relative to an ancestor.

Origin:
1875–80; hetero- + chron- + -y3; compare German Heterochron

heterochronic [het-er-uh-kron-ik] , heterochronistic, heterochronous, adjective
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