retroposon

[ rĕt′rō-pōsən ]

n.

A transposition of DNA sequences that does not occur in DNA itself but rather when mRNA is transcribed back into the genomic DNA.

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