heterochrony


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Related to heterochrony: Hypermorphosis

heterochrony

(hĕt′ə-rō-krŏn′ē)
n.
A change or set of changes in the timing or duration of an organism's ontogenetic development compared with an ancestral species, resulting in morphological differences between ancestor and descendant.

het′e·ro·chron′ic, het′e·ro·chron′ous adj.