position effect

noun Genetics.

the alteration in the expression of a gene or genetic region due to its relocation within the genome as a result of inversion or translocation.

Nearby words

  1. posit,
  2. positif,
  3. position,
  4. position angle,
  5. position audit,
  6. position isomer,
  7. position line,
  8. position paper,
  9. position sense,
  10. positional

Origin of position effect

First recorded in 1925–30

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for position effect

position effect


the effect on the phenotype of interacting genes when their relative positions on the chromosome are altered, as by inversion
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

Medicine definitions for position effect

position effect


Variation in the expression of a gene that results from changes in the gene's position along a chromosome.

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