Direction of shell coiling in the snail Lymnaea peregra is conditioned by a form of extrachromosomal inheritance known as ____. A)sex- linked inheritance B)maternal effect C)epistasis D)heteroplasmy E)independent assortment

Question

Quizplus · Accepted Answer

Maternal effect refers to the influence of the mother's genotype on the phenotype of her offspring. In the case of Lymnaea peregra, the direction of shell coiling is determined by the mitochondrial DNA inherited from the mother, making it a form of extrachromosomal (outside of the nucleus) inheritance. Therefore, the correct answer is B, as this type of inheritance is responsible for the shell coiling direction.

Direction of Shell Coiling in the Snail Lymnaea Peregra Is