Abstract
THE elegant analysis of mitotic crossing-over and segregation in Drosophila melanogaster by Stern1 provided a model for comparison when an apparently similar process was observed by Pontecorvo et al. in diploid strains of Aspergillus nidulans, Aspergillus niger and Penicillium chrysogenum. The results obtained in Aspergillus nidulans have been entirely consistent with the interpretation by Stern; that is, mitotic crossing-over occurs such that at any one point only two of the four strands recombine and segregation of the centromeres is of the mitotic type2.
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References
Stern, C., Genetics, 21, 624 (1936).
Pontecorvo, G., Tarr Gloor, E., and Forbes, E., J. Genet., 52, 226 (1954).
Lewis, E. B., “Adv. Genet.”, 3, 73 (1950).
Roper, J. A., Experientia, 8, 14 (1952).
Pontecorvo, G., “Adv. Genet.”, 5, 141 (1953).
Roper, J. A., “Adv. Genet.”, 5, 208 (1953).
Haldane, J. B. S., “The Biochemistry of Genetics”, 113 (George Allen and Unwin, 1954).
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ROPER, J., PRITCHARD, R. Recovery of the Complementary Products of Mitotic Crossing-over. Nature 175, 639 (1955). https://doi.org/10.1038/175639a0
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DOI: https://doi.org/10.1038/175639a0
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