Medical term:
heterochrony
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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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