somatic cell mutation
A somatic mutation is a genetic mutation which occurs in a somatic cell after conception. These mutations can lead to a variety of medical issues, and lay people commonly associate them specifically with cancers.f a somatic mutation occurs in utero, all of the cells descended from the somatic cell will carry the mutation. This results in a situation called genetic mosaicism, in which some of the cells in someone's body have DNA which is different from other cells.