alexa Mobile DNA elements in primate and human evolution.
General Science

General Science

Biological Systems: Open Access

Author(s): Xing J, Witherspoon DJ, Ray DA, Batzer MA, Jorde LB

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Abstract Roughly 50\% of the primate genome consists of mobile, repetitive DNA sequences such as Alu and LINE1 elements. The causes and evolutionary consequences of mobile element insertion, which have received considerable attention during the past decade, are reviewed in this article. Because of their unique mutational mechanisms, these elements are highly useful for answering phylogenetic questions. We demonstrate how they have been used to help resolve a number of questions in primate phylogeny, including the human-chimpanzee-gorilla trichotomy and New World primate phylogeny. Alu and LINE1 element insertion polymorphisms have also been analyzed in human populations to test hypotheses about human evolution and population affinities and to address forensic issues. Finally, these elements have had impacts on the genome itself. We review how they have influenced fundamental ongoing processes like nonhomologous recombination, genomic deletion, and X chromosome inactivation. (c) 2007 Wiley-Liss, Inc. This article was published in Am J Phys Anthropol and referenced in Biological Systems: Open Access

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