a self-replicating genetic particle postulated to be in the cytoplasm of a cell, as in mitochondria.
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biology any gene other than those carried in the nucleus of a eukaryotic cell, such as a mitochondrial gene
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
A self-replicating hereditary structure thought to exist in cytoplasm and function in a manner analogous to, but independent of, chromosomal genes.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.