Chapter 9 Summary

The topics covered in this chapter can be summarized as follows:

  • Recombination is defined as any process that results in gametes with combinations of alleles that were not present in the gametes of a previous generation.
  • The recombination frequency between any two loci depends on their relative chromosomal locations.
  • Unlinked loci show a maximum 50% recombination frequency.
  • Loci that are close together on a chromosome are linked and tend to segregate with the same combinations of alleles that were present in their parents.
  • Crossovers are a normal part of most meioses, and allow for recombination between linked loci.
  • Measuring recombination frequency is easiest when starting with pure-breeding lines with two alleles for each locus, and with suitable lines for test crossing.

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Introduction to Genetics by Natasha Ramroop Singh, Thompson Rivers University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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