Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.
Related to extrachromosomal inheritance: cytoplasmic inheritance
transmission of characters dependent on some factor not connected with the chromosomes.
ex·tra·chro·mo·som·al in·her·it·ance(eks'tră-krō-mŏ-sō'măl in-her'i-tăns)
Transmission of characters dependent on some factor not connected with the chromosomes.
Inherited traits governed by mechanisms other than by chromosomes.
See also: inheritance