Nocturnal to Diurnal Transition in the Common Ancestor of Haplorrhines: Evidence from Genomic-Scan for Positively Selected Genes
Transition from a nocturnal to a diurnal lifestyle represents a major shift in primate evolution,plays a central role in the adaptation of these species to new habitats,and is involved in modifications to their physiological and social behaviors (Heesy and Ross,2001;Shultz et al.,2011).However,two core problems concerning the circadian rhythm transition remains unresolved.First,there is controversy concerning the activity pattern of the ancestral primate (Heesy and Ross,2001;Tan et al.,2005).Second,the transition process for circadian rhythm in primate evolutionary history is unresolved.Although most research suggests that primates transformed from a nocturnal to a diurnal circadian rhythm in the lineage leading to the common ancestor of the anthropoids or the haplorrhines (anthropoids and tarsier) (Ross,2000;Heesy and Ross,2001),evidence has been insufficient to determine whether this occurred in the lineage leading to the common ancestor of the haplorrhines or the anthropoids.
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This work was supported by the grants from the National Natural Science Foundation of China Nos.2007CB411600and 2008GA001 and the Bureau of Science and Technology of Yunnan Province No.31061160189.Guo-Dong Wang was
2015-03-16(万方平台首次上网日期,不代表论文的发表时间)
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