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. 1973 May;74(1):63–80. doi: 10.1093/genetics/74.1.63

Mutational Analysis of Mating Type Inheritance in Syngen 4 of PARAMECIUM AURELIA

Bruce C Byrne 1
PMCID: PMC1212938  PMID: 17248611

Abstract

Six genic mutations restricting clones to mating type VII (O) were isolated in syngen 4, Paramecium aurelia. The only three extensively tested were neither allelic nor closely linked. A second type of mutation, allelic to one of the O restricted mutants, was also found. Clones homozygous for this mutant gene were selfers, producing both O and E (VIII) mating types, but only when they were progeny of mating type E parental clones. While all seven mutant genes behaved as recessives in monohybrid crosses, clones heterozygous at two different loci often demonstrated an unanticipated phenotype: selfing. The significance of the findings is discussed in relation to mating type determination and the evolution of mating type systems.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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