Abstract:
:We measured nucleotide variability within and between the three semispecies of the Drosophila athabasca complex, at the period (per) gene by using a polymerase chain reaction-based four-cutter restriction-enzyme analysis. The levels of polymorphism varied considerably between the three semispecies. Our results for per, combined with previous data for X-linked allozymes, suggest that the X chromosome in the western-northern semispecies is less variable than expected under an equilibrium-neutral model. Both the pattern of divergence between the semispecies and a cladistic clustering of per haplotypes support the previously hypothesized grouping of eastern A and eastern B as the two most recently diverged semispecies. A 21-bp in-frame segment in the region of per which shares sequence similarity with the neuronal development gene single minded is deleted in all eastern A and eastern B flies examined but is present in all of the western-northern flies and all other published per sequences. Despite these hints that there may be significant differences at the per gene between the semispecies, especially the western-northern group versus the two eastern groups, there is no compelling evidence that per is involved in the mating song differences between the semispecies.
journal_name
Mol Biol Evoljournal_title
Molecular biology and evolutionauthors
Ford MJ,Yoon CK,Aquadro CFdoi
10.1093/oxfordjournals.molbev.a040101subject
Has Abstractpub_date
1994-03-01 00:00:00pages
169-82issue
2eissn
0737-4038issn
1537-1719journal_volume
11pub_type
杂志文章abstract::It is known that the effective population size (Ne) and the mutation rate (u) vary across the genome. Here, we show that ignoring this heterogeneity may lead to biased estimates of past demography. To solve the problem, we develop new methods for jointly inferring past changes in population size and detecting variatio...
journal_title:Molecular biology and evolution
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pub_type: 杂志文章
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更新日期:2004-05-01 00:00:00
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doi:10.1093/molbev/msu089
更新日期:2014-06-01 00:00:00
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doi:10.1093/molbev/msr264
更新日期:2012-03-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msw197
更新日期:2016-12-01 00:00:00
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更新日期:2014-08-01 00:00:00
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pub_type: 杂志文章
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更新日期:2018-05-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/oxfordjournals.molbev.a040173
更新日期:1994-11-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/oxfordjournals.molbev.a025728
更新日期:1997-12-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:1985-05-01 00:00:00
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pub_type: 杂志文章
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更新日期:1995-05-01 00:00:00
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更新日期:2008-09-01 00:00:00
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更新日期:2007-12-01 00:00:00
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更新日期:2004-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:2001-07-01 00:00:00
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更新日期:2015-01-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 信件
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更新日期:2005-03-01 00:00:00