title: Recombination in relation to ultraviolet sensitivity in Chlamydomonas reinhardi.
abstract: A mutant strain of Chlamydomonas reinhardi which is UV sensitive as a result of a single-gene chromosomal mutation has also been found to exhibit reduced recombination. In crosses homozygous for the mutant allele, a reduction in recombination frequency was demonstrated in two different linkage groups and in three different genetic backgrounds. Thus a single mutation affecting UV sensitivity also has a possible effect on recombination. Such a mutant could be analogous to the rec(-) mutants discovered in E. coli and as such be useful in the study of recombination mechanisms. Three additional UV-sensitive isolates were tested. Recombination was not altered in these mutant strains.
mesh_terms: D002470:Cell Survival; D002696:Chlamydomonas / Q000528:radiation effects; D000460:Chlorophyta / Q000528:radiation effects*; D002869:Chromosome Aberrations; D003433:Crosses, Genetic; D008040:Genetic Linkage; D005838:Genotype; D006238:Haploidy; D006579:Heterozygote; D006720:Homozygote; D009154:Mutation; D011830:Radiation Effects; D011995:Recombination, Genetic; D013170:Spores; D014466:Ultraviolet Rays