atavism

名词 atavism:

1. a reappearance of an earlier characteristic
   同义词：reversion, throwback

at.a.vism

n.（名词）
The reappearance of a characteristic in an organism after several generations of absence, usually caused by the chance recombination of genes.
返祖现象，隔代遗传：机体特征在几代缺失后重新出现，通常由基因重组引起
An individual or a part that exhibits atavism.Also called throwback
返祖体：表现出返祖现象的个体或部分也作 throwback
The return of a trait or recurrence of previous behavior after a period of absence.
重现：经过一段时间的缺失后，一特征的重新出现或以前特性的再次发生

来源：
French atavisme
法语 atavisme
from Latin atavus [ancestor]
源自 拉丁语 atavus [祖先]
atta [father]
atta [父亲]
avus [grandfather] * see awo-
avus [祖父] *参见 awo-

【引伸】
at.avist
n.（名词）
at.avis.tic
adj.（形容词）
at.avis.tically
adv.（副词）