Abstract
Twenty autosomal inversions were detected in the polytene chromosomes of larvae obtained by hybridizing inversion-free strains of the species of the bipectinata complex (D. bipectinata, D. parabipectinata, D. malerkotliana and D. pseudoananassae). Twenty autosomal inversions are also known as extant polymorphisms in these species; fifteen (possibly sixteen) of these inversions are different from those detected in the interspecific hybrids. The available evidence permits reconstruction of chromosome phylogenies deriving malerkotliana, pseudoananassae and a population ancestral to both bipectinata and parabipectinata directly from a common ancestral population. The results of the study support the Carson hypothesis of transitional homoselection during the processes of speciation.
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Part of this study was incorporated in a section of a thesis submitted for the degree of Doctor of Philosophy in the University of Queensland, Australia; the work was continued under support by a U.S. Public Health Service Research Grant No. GM-11609 from the National Institute of General Medical Sciences to Prof. M. R. Wheeler, University of Texas.
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Bock, I.R. Intra- and interspecific chromosomal inversions in the Drosophila bipectinata species complex. Chromosoma 34, 206–229 (1971). https://doi.org/10.1007/BF00285187
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DOI: https://doi.org/10.1007/BF00285187