- THIS ARTICLE
- Full Text (PDF)
- Alert me when this article is cited
- Alert me if a correction is posted
- SERVICES
- Similar articles in this journal
- Similar articles in PubMed
- Alert me to new issues of the journal
- Download to citation manager
- Reprints & Permissions
- CITING ARTICLES
- Citing Articles via Google Scholar
- GOOGLE SCHOLAR
- Articles by Scholnick, S. B.
- Articles by Bruns, P. J.
- Search for Related Content
- PUBMED
- PubMed Citation
- Articles by Scholnick, S. B.
- Articles by Bruns, P. J.
A GENETIC ANALYSIS OF TETRAHYMENA THAT HAVE ABORTED NORMAL DEVELOPMENT
Steven B. Scholnick 1 and Peter J. Bruns 2
1 Section of Genetics, Cornell University, Ithaca, New York 14853
2 Section of Development, Cornell University, Ithaca, New York 14853
Conjugating Tetrahymena can abort the sexual cycle before the production of progeny somatic (macro-) nuclei and return to vegetative growth. We have analyzed the germinal (micronuclear) genotypes of these cells in order to determine the stage at which they aborted conjugation. Our data demonstrate that nearly all of these cells attempt meiosis, but that very few reach the successful completion of cross-fertilization. The resulting micronuclear genotypes suggest that either germinal chromosomes or entire nuclei are lost during an unsuccessful attempt at meiosis or cross-fertilization. We conclude that the decision to develop progeny macronuclei is made during meiosis and is dependent on the completion of some step necessary for successful cross-fertilization.
Submitted on January 27, 1982Accepted on June 1, 1982