帰き先せん遺い伝でん

noun

reversion; atavism

Rare genetics term for the reappearance of an ancestral trait after several generations of absence. The more common Japanese term is 先祖返り (せんぞがえり).

See also: 先祖返り

• 帰き先せん遺い伝でんは、何なん世せ代だいも現あらわれなかった形けい質しつが突とつ然ぜん再ふたたび現あらわれる現げん象しょうを指さす。

  Atavism refers to the phenomenon where a trait absent for many generations suddenly reappears.