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. 1997 Sep;147(1):223–230. doi: 10.1093/genetics/147.1.223

Discordant Rates of Chromosome Evolution in the Drosophila Virilis Species Group

J Vieira 1, C P Vieira 1, D L Hartl 1, E R Lozovskaya 1
PMCID: PMC1208106  PMID: 9286682

Abstract

In Drosophila, the availability of polytene chromosome maps and of sets of probes covering most regions of the chromosomes allows a direct comparison of the organization of the genome in different species. In this work, we report the localization, in Drosophila virilis, D. montana, and D. novamexicana, of >100 bacteriophage P1 clones containing ~65 kilobase inserts of genomic DNA from D. virilis. Each clone hybridizes with a single euchromatic site in either chromosome 1 or chromosome 3 in D. virilis. From these data, it is possible to estimate the minimum number of inversions required to transform the map positions of the probes in one species into the map positions of the same probes in a related species. The data indicate that, in the D. virilis species group, the X chromosome has up to four times the number of inversions as are observed in chromosome 3. The first photographic polytene chromosome maps for D. montana and D. novamexicana are also presented.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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