Abstract
The yield of prototrophic recombinants in crosses between nit-2 alleles is repressed in the presence of the rec-z+ gene. Similarly, recombination between his-1 alleles is repressed by the rec-1+ gene. Experiments reported in this paper show that if the rec-1+ and rec-z+ loci are different, the worst estimate indicates that they are located not more than O· 67 map units apart with 95 % probability. It is likely, therefore, that rec-1 controls the frequency of recombination between nit-2 alleles as well as between his-1 alleles. This is in line with evidence that each of the genes rec-2+ and rec-3+ repress recombination in more than one chromosomal segment. Nevertheless, each rec gene is specific in its action, repressing recombination in only a limited fraction of the genome.
Original language | English |
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Pages (from-to) | 561-574 |
Number of pages | 14 |
Journal | Australian Journal of Biological Sciences |
Volume | 27 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1974 |