germinal mosaicism

ger·mi·nal mo·sa·i·cism

, gonadal mosaicism
a state in which some of the germ cells of the gonad are of a form not present in either parent, because of mutation in an intermediate progenitor of these cells.
References in periodicals archive ?
Germinal mosaicism in a sample of families with Duchenne/Becker muscular dystrophy with partial deletions in the DMD gene.
Germinal mosaicism increases the recurrence risk for "new" Duchenne muscular dystrophy mutations.