Open AccessAllelic recombination in the his‐I locus of Neurospora crassa in isolates showing high and low frequency of intergenic recombination
Author(s) -
CEDERBERG HÅKAN
Publication year - 1985
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1985.tb00493.x
Subject(s) - biology , recombination , genetics , locus (genetics) , allele , neurospora crassa , mating type , genetic recombination , gene , allele frequency , mutant
From lines selected for high and low frequency of second division segregation (SDS) for asco in linkage group (LG) VI, one wild‐type isolate of mating type (mt) A was picked out from the high and the low selection line, respectively. Both isolates were chosen on the basis of showing extreme SDS‐frequencies, and both belonged to the last generation of selection. The two wild‐type isolates were crossed with a strain carrying marker genes suitable for the analysis of allelic recombination in the his‐I locus in LG V. The progeny of mt a was analysed for the influence of high and low line background on allelic recombination. The frequency of his‐I prototrophs seems to be related to the high and low line background of the isolates. The two backgrounds showed no different influence on the recombination of markers flanking the his‐I locus among his‐I prototrophs. Variation of the frequency of his‐I prototrophs not attributable to the rec‐I locus is suggested. The data are interpreted according to Holliday's model of genetic recombination.