mosaicism

[moh-zey-uh-siz-uhm]

mo·sa·i·cism

[moh-zey-uh-siz-uhm]
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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Mosaicism is always a great word to know.
So is adaptation. Does it mean:
any alteration in the structure of an organism resulting from natural selection, by which the organism becomes more able to survive in its environment
the colloidal and liquid substance of which cells are formed, the cytoplasm and nucleus: no longer in technical use
American Heritage
Medical Dictionary

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.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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