mapping function

[măpĭng]
n.
  1. A mathematical formula that relates distances on a gene map to recombination frequencies; its graphic rendering shows that the recombination value of two genes is never greater than 50 percent regardless of how far apart the genes are on a chromosome.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.