definitions
  • synonyms

transition mutation

n.

A point mutation involving substitution of one base pair for another by replacement of one purine by another purine and of one pyrimidine by another pyrimidine but without change in the purine-pyrimidine orientation.

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Nearby words

transition, transition area, transition element, transition elements, transition gyrus, transition mutation, transition point, transition probability, transition region, transition team, transition temperature
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.