Abstract
A SYSTEMATIC account of the North American species of Drosophila and related genera, which includes many new species from collections made in various parts of the continent, will be found in this volume. One of the chief features of interest in such a monograph lies in a comparison of the systematic differences distinguishing species with those distinguishing mutants. In the latter part of the work this subject is discussed. The species of Drosophila, although often closely alike in appearance, so that only intensive study has succeeded in separating them, are extraordinarily difficult to cross. This applies not only to those having different chromosome groups, which no one has yet succeeded' in crossing, but also to those in which the chromosomes are alike.
The North American Species of Drosophila.
By A. H. Sturtevant. (Publication No. 301.) Pp. iv + 150 + 3 plates. (Washington: The Carnegie Institution of Washington, 1921.)
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G., R. The North American Species of Drosophila . Nature 107, 743 (1921). https://doi.org/10.1038/107743a0
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DOI: https://doi.org/10.1038/107743a0