The pattern of polytene chromosome synapsis in Drosophila species and interspecific hybrids |
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| Authors: | M B Evgen'ev G G Polianskaya |
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| Institution: | (1) Institute of Developmental Biology, Moscow and Department of Genetics and Selection, Leningrad University, Leningrad, USSR;(2) Present address: Institute of Molecular Biology, Academy of Sciences of USSR, Vavilov str. 32, B-312 Moscow, USSR |
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| Abstract: | The pairing of polytene chromosomes was investigated in Drosophila melanogaster, Drosophila simulans and their hybrids as well as in species of the D. virilis group and in F1 hybrids between the species of this group. The study of frequency and extent of asynapsis revealed non-random distribution along chromosome arms both in interspecific hybrids and pure Drosophila species. It is suggested that definite chromosome regions exhibiting high pairing frequency serve as initiation sites of synapsis in salivary gland chromosomes. |
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