mutation

n. /mjuːˈteɪ.ʃən/ C1

突变；变异

A change in the genetic structure of an animal or plant.

仙境例句

The Tortoise said a small mutation had given one young crab a blue shell instead of a red one.

老陆龟说，一次小小的基因突变让一只小螃蟹长了蓝壳，而不是红壳。