Mosaic

1. A piece of artwork created by placing colored squares (usually tiles) in a pattern so as to create a picture.
2. An individual composed of two or more cell lines of different genetic or chromosomal constitution, but from the same zygote.
3. Any of several viral diseases that cause mosaic-like patterns to appear on leaves.
4. A composite picture made from overlapping photographs.

adjective

(of an individual) Containing cells of varying genetic constitution.