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. 1972 Apr;70(4):521–536. doi: 10.1093/genetics/70.4.521

Genetics of the St Serotype System in TETRAHYMENA PYRIFORMIS, Syngen 1

Frank S Grass 1
PMCID: PMC1212754  PMID: 4624603

Abstract

Genetic analyses using lines of Tetrahymena pyroformis manifesting different serotypes indicate that the St serotypes are governed by alleles at a single genetic locus. These alleles are termed StA and StC. The St locus is not closely linked to any of the other well-studied loci examined. Differentiation in StA/StC heterozygotes follows a pattern very similar to that observed with lines heterozygous at the other loci. Initially both alleles are expressed, but as the synclone divides, lines develop that manifest one allele or the other but not both. The time of differentiation is very early in the clonal life cycle, and the output ratio is eccentric. The pattern of development of the St locus places it in a category with the mating type and H serotype loci.

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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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