mosaicism

[moh-zey-uh-siz-uh m] /moʊˈzeɪ əˌsɪz əm/

noun, Biology

a condition in which an organism or part is composed of two or more genetically distinct tissues owing to experimental manipulation or to faulty distribution of genetic material during mitosis.

Origin

1925-30; mosaic + -ism

mosaicism in Medicine

mosaicism mo·sa·i·cism (mō-zā'ĭ-sĭz'əm)
n.
A condition in which tissues of genetically different types occur in the same organism.