Atavistic meaning

ătə-vĭstĭk
Relating to earlier, more primitive behavior that returns after an absence.
adjective
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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.
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(biology) Of the recurrence of a trait reappearing after an absence of one or more generations due to a chance recombination of genes.
adjective
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Of a throwback or exhibiting primitivism.
adjective
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Origin of atavistic

  • From atavism +‎ -istic, from French atavisme, from Latin atavus (“ancestor”), from at + avus (“grandfather”).

    From Wiktionary