A molecular view of primate phylogeny and important systematic and evolutionary questions.

A molecular view of primate phylogeny and important systematic and evolutionary questions.
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灵长类系统发育和重要系统和进化问题的分子观点。

DOI:
10.1093/oxfordjournals.molbev.a040574
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发表时间:
1989
影响因子:
10.7
通讯作者:
Slightom,JL
Slightom,JL
中科院分区:
生物学1区
文献类型:
--
作者:
Koop,BF;Tagle,DA;Goodman,M;Slightom,JL

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对灵长类动物β -珠蛋白基因簇的大量核苷酸序列数据进行系统发育分析,阐明了灵长类动物的系统学和进化,并揭示了不同灵长类动物谱系中突变积累率的差异高达7倍。来自DNA序列的灵长类系统发育图澄清了形态学图中的许多模糊之处。在分子图谱上,矮狐猴和棕色狐猴归为狐猴总科,狐猴总科和狐猴总科归为链猴亚目,狐猴总科和类人猿总科归为单猿亚目。分子图谱也为人类-黑猩猩的进化分支提供了重要的证据,这一进化分支勉强排除了大猩猩,也为人科动物中大猩猩-黑猩猩-人类的进化分支提供了压倒性的证据。DNA序列的进化速度似乎在类人猿的早期灵长类祖先中是最快的,在猴类人猿分支中是第二快的。在类人猿进化的过去25迈里,突变率是最慢的,这表明降低突变率的机制与寿命的延长有关。
Phylogenetic analysis of extensive nucleotide sequence data from primate beta-globin gene clusters elucidates the systematics and evolution of the order Primates and reveals that rates of accumulation of mutations vary by as much as a factor of seven among different primate lineages. The picture of primate phylogeny from DNA sequences clarifies many ambiguities of the morphological picture. In the molecular picture, dwarf and brown lemurs group together into superfamily Lemuroidea, Lemuroidea and Lorisoidea into suborder Strepsirhini, and Tarsius and Anthropoidea into suborder Haplorhini. The molecular picture also provides both significant evidence for a human-chimpanzee clade that narrowly excludes gorilla and overwhelming evidence for the gorilla-chimpanzee-human clade within Hominoidea. Rates of DNA sequence evolution appear to have been fastest in the early primates ancestral to Anthropoidea and next fastest on the lorisoid branch. Rates were slowest over the past 25 Myr of hominoid descent, suggesting that mechanisms lowering the mutation rate evolved in correlation with lengthened life spans.
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