Adaptive evolution of color vision genes in higher primates.
Adaptive evolution of color vision genes in higher primates.
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高等灵长类动物色觉基因的适应性进化。
DOI：
10.1126/science.7652574
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Li,WH
中科院分区：
文献类型：
--
作者：
Shyue,SK;Hewett-Emmett,D;Sperling,HG;Hunt,DM;Bowmaker,JK;Mollon,JD;Li,WH
对松鼠猴和狨猴x连锁彩色光色素位点3个多态等位基因的内含子4序列分析表明，这3个多态等位基因在松鼠猴和狨猴中存在着异常的差异。这些数据进一步表明，在这两个新世界猴谱系中，要么每个试验等位基因系统都是独立出现的，要么在每个物种中，至少有7个内含子4缺失和插入（两个物种中有14个）通过基因转换或重组在等位基因之间转移和均匀化。无论哪种情况，每个物种的等位基因显然都持续了500多万年，很可能是通过显性选择维持下来的。
The intron 4 sequences of the three polymorphic alleles at the X-linked color photo-pigment locus in the squirrel monkey and the marmoset reveal that the alleles in each species are exceptionally divergent. The data further suggest either that each triallelic system has arisen independently in these two New World monkey lineages, or that in each species at least seven deletions and insertions (14 in the two species) in intron 4 have been transferred and homogenized among the alleles by gene conversion or recombination. In either case, the alleles in each species apparently have persisted more than 5 million years and probably have been maintained by overdominant selection.