collateral inheritance

col·lat·er·al in·her·i·tance

the appearance of characters in collateral members of a family group, as when an uncle and a niece show the same character inherited from a common ancestor; in recessive characters it may appear irregularly, in contrast to dominant characters transmitted directly from one generation to the next.

col·lat·er·al in·her·i·tance

(kŏ-lat'ĕr-ăl in-her'i-tăns)
The appearance of characters in collateral members of a family group, as when an uncle and a niece show the same character inherited from a common ancestor.