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Transmission of a genetic trait through total conjugation in a hypotrich ciliate Paraurostyla weissei. Genetic basis of the multi-left-marginal mutant

Published online by Cambridge University Press:  14 April 2009

Maria Jerka-Dziadosz  and
Bozena Dubielecka
Maria Jerka-Dziadosz
Affiliation:
Department of Cell Biology, M. Nencki Institute of Experimental Biology, Polish Academy of Science, Warsaw, Poland
Bozena Dubielecka
Affiliation:
Department of Cell Biology, M. Nencki Institute of Experimental Biology, Polish Academy of Science, Warsaw, Poland
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The genetic basis of slow growth rate and aberrations in the ciliary pattern was studied in the multi-left-marginal variant of Paraurostyla weissei. The 3:1 segregation in F2 sibling crosses and 1:1 segregation in test crosses indicate that the aberrant phenotype is controlled by a recessive allele at a single gene locus termed mlm. The phenotypic change from wild type to mlm takes place about 5–8 cell cycles after conjugation. The study established that total conjugation in P. weissei is a true sexual process in which meiosis, fertilization and Mendelian segregation occur.

Type
Research Article
Information
Genetics Research , Volume 46 , Issue 3 , December 1985 , pp. 263 - 271
Copyright
Copyright © Cambridge University Press 1985

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