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Adaptive evolution of conserved non-...

The University of Chicago.

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Adaptive evolution of conserved non-coding elements.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Adaptive evolution of conserved non-coding elements./
作者:	Kim, Su Yeon.
面頁冊數:	106 p.
附註:	Advisers: Jonathan Pritchard; Peter McCullagh.
Contained By:	Dissertation Abstracts International69-02B.
標題:	Biology, Biostatistics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3300437
ISBN:	9780549457466

Adaptive evolution of conserved non-coding elements.
Kim, Su Yeon.

Adaptive evolution of conserved non-coding elements. - 106 p.

Advisers: Jonathan Pritchard; Peter McCullagh.

Thesis (Ph.D.)--The University of Chicago, 2008.

Conservation of DNA sequences across evolutionary history is a highly informative signal for identifying regions with important biological functions. In particular, conserved non-coding regions have been shown to be good candidates for containing regulatory elements that have roles in gene regulation. Recent studies have found that there are many thousands of conserved non-coding elements (CNCs) in vertebrate genomes and have suggested possible functions for some of these elements, but the function of most CNCs remains unknown. To study the evolution of CNCs, the we developed a statistical method called the "shared rates test" to identify CNCs that show changes in evolutionary rates on particular branches of the mammalian phylogenetic tree. Those rate changes may indicate changes in the function of a CNC. We applied our method to CNCs of five mammalian genomes, and found that indeed many CNCs have experienced rate changes during their evolution. We also found a subset of CNCs showing accelerations in evolutionary rate that actually exceed the neutral rates, suggesting that adaptive evolution has shaped the evolution of those elements.

ISBN: 9780549457466Subjects--Topical Terms:

1018416
Biology, Biostatistics.

Adaptive evolution of conserved non-coding elements.
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