atavistically

atavistic

[at-uh-vis-tik]
adjective
of, pertaining to, or characterized by atavism; reverting to or suggesting the characteristics of a remote ancestor or primitive type.

Origin:
1870–75; atav(ism) + -istic

atavistically, adverb
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World English Dictionary
atavistic (ˌætəˈvɪstɪk)
 
adj
of or relating to reversion to a former or more primitive type
 
atavistically
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
atavistic   (āt'ə-vĭs'tĭk)  Pronunciation Key 
Relating to an inherited trait that reappears in an individual after being absent from a strain of organism for several generations. Atavistic traits were formerly thought to be throwbacks to ancestral types but are now known to be due to the inheritance of a pair of recessive genes.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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