How was the Sdic gene fixed?

被引:7
作者
Charlesworth, B [1 ]
Charlesworth, D [1 ]
机构
[1] Univ Edinburgh, Inst Cell Anim & Populat Biol, Edinburgh EH9 3JT, Midlothian, Scotland
关键词
D O I
10.1038/22922
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Nurminsky et al.1 have described a new gene of Drosophila melanogaster, termed Sdic (for sperm-specific dynein, intermediate chain), which appears to have evolved recently as a result of fusion between duplicated copies of two adjacent genes, Cdic and AnnX. They consider that the low DNA sequence variation at Sdic and Cdic is consistent with a recent ‘selective sweep’ associated with the fixation of Sdic. (In a selective sweep, new favourable mutations are incorporated so rapidly that linked alleles can ‘hitchhike’ and become fixed.) Here we evaluate the evidence for this proposal.
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页码:519 / 520
页数:2
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