A DNA sequence conferring high postmeiotic segregation frequency to heterozygous deletions in Saccharomyces cerevisiae is related to sequences associated with eucaryotic recombination hotspots.


Journal Article

The meiotic behavior of two graded series of deletion mutations in the ADE8 gene in Saccharomyces cerevisiae was analyzed to investigate the molecular basis of meiotic recombination. Postmeiotic segregation (PMS) was observed for a subset of the deletion heterozygosities, including deletions of 38 to 93 base pairs. There was no clear relationship between deletion length and PMS frequency. A common sequence characterized the novel joint region in the alleles which displayed PMS. This sequence is related to repeated sequences recently identified in association with recombination hotspots in the human and mouse genomes. We propose that these particular deletion heterozygosities escape heteroduplex DNA repair because of fortuitous homology to a binding site for a protein.

Full Text

Duke Authors

Cited Authors

  • White, JH; DiMartino, JF; Anderson, RW; Lusnak, K; Hilbert, D; Fogel, S

Published Date

  • March 1988

Published In

Volume / Issue

  • 8 / 3

Start / End Page

  • 1253 - 1258

PubMed ID

  • 3285179

Pubmed Central ID

  • 3285179

International Standard Serial Number (ISSN)

  • 0270-7306

Digital Object Identifier (DOI)

  • 10.1128/mcb.8.3.1253


  • eng

Conference Location

  • United States