Preferential Segregation of Chromosomes from a Trivalent in Haplopappus gracilis
- 31 July 1964
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 145 (3631), 511-513
- https://doi.org/10.1126/science.145.3631.511
Abstract
Crosses between plants of Haplopappus gracilis (n = 2) and a race with three pairs of chromosomes (tribivalens) gave a highly fertile five-chromosome hybrid. In both races the chromosomes with the satellites appear homologous, but the other two tribivalens chromosomes pair with the A chromosome (without a satellite) of H. gracilis. Disjunction from the resulting trivalent is preferential: the A chromosome goes to one pole and the two tribivalens chromosomes to the other.Keywords
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