Preferential ascus discharge during cross maturation in Sordaria brevicollis.

The Genetics of a Probable Insertional Translocation in SORDARIA BREVICOLLIS.

A chromosome rearrangement has been isolated and characterized in Sordaria brevicollis. Crosses to spore color mutants on each of the seven linkage groups have enabled the breakpoints to be mapped. The simplest hypothesis to account for the results is that a piece of linkage group VI has been translocated to linkage group V and inserted 2.7 map units from its centromere. Previous reports of mar...

Genetic Recombination at the Buff Spore Color Locus in SORDARIA BREVICOLLIS. II. Analysis of Flanking Marker Behavior in Crosses between Buff Mutants.

Aberrant asci containing one or more wild-type spores were selected from crosses between pairs of alleles of the buff locus in the presence of closely linked flanking markers. Data were obtained relating to the site of aberrant segregation and the position of any associated crossover giving recombination of flanking markers. Aberrant segregation at a proximal site within the buff gene may be as...

The Genetics of Sordaria Brevicollis. I. Determination of Seven Linkage Groups.

The intergradation, genetic interchangeability and interpretation of gene conversion spectrum types.

In the Pasadena strains of Ascobolus immersus, the gene conversion propperties of 29 induced (nine UV, nine NG, and 11 ICR-170) and nine spontaneous white-ascospore mutations have been studied. Each mutant was crossed to three types of derived wild-type strains; single mutants often gave very different conversion results in the three types of crosses, with any or all of the following changes in...

Genetics of an interspecific cross in the genus Sordaria. I. Analysis of 8-spored asci homozygous for the mating type factor.

new heterothallic species of the genus Sordaria, Sordaria heterothallis ' Ze?ds and Maniotis (FIELDS and MANIOTIS, 1963) and Sordaria thermophila Fields (FIELDS 1968), are the subjects of this study. FIELDS (1963), in a comparative study of the two isolates concluded that they were distinct species on the basis of morphological and cultural studies, and from the results of hybridization experim...