Gene duplication provides large numbers of new genes that can lead to the evolution of new functions. Duplicated genes can diverge by changes in sequences, expression patterns, and functions. Micro RNAs play an important role in the regulation of gene expression in many eukaryotes. After duplication, two paralogs may diverge in their micro RNA binding sites,which might impact their expression a…

Tahun Terbit

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Bacterial endosymbiosisis an important evolutionary process in insects, which can harbor both obligate and facultative symbionts.The evolution of these symbionts is driven by evolutionary convergence, and they exhibit among the tiniest genomes in prokaryotes. The large host spectrum off acultative symbionts and the high diversity of strategies they use to infect new hosts probably impact the ev…

Tahun Terbit

1994

Edisi

Ed. 2

ISBN/ISSN

0-8039-4653-8

Deskripsi Fisik

xiv, 338 p. : ill. , 28, 5 cm

No. Panggil

001.42 MIL q

This paper considers the kinds of information concerning English idioms that is available on the web, particularly the material provided on non-lexicographical websites and that provided in establishment dictionaries for learners. After looking at a sample of webpages and the idioms they list, it then examines two idioms as case studies, summarizing corpus evidence and comparing webpage treatme…

The metazoan super clade Lophotrochozoa includes mollusks, annelids, and several other animal phyla. It is reasonable to assume that this organismal diversity may be traced, in part, to changes in developmentally important genes, such as the homeobox genes. Although most comparative studies have focussed on ancient homeobox gene families conserved across bilaterians, there are also “novel” …

Cynomolgus macaques (Macaca fascicularis) were introduced to the island of Mauritius by humans around the 16th century. The unique demographic history of the Mauritian cynomolgus macaques provides the opportunity to not only examine the genetic background of well-established non human primates for biomedical research but also understand the effect of an extreme population bottle neck on the pat…

Complex eukaryotic genomes are riddled with repeated sequences whose derivation does not coincide with phylogenetic history and thus is often unknown. Among such sequences, the capacity for transcriptional activity coupled with the adaptive use of reverse transcription can lead to adiverse group of genomic elements across tax a, other wise known as selfish elements or mobile elements. Sho…

Sequence capture and restrictions it eassociated DNA sequencing (RADseq) are popular methods for obtaining large numbers of loci for phylogenetic analysis. These methods are typically used to collect data at different evolutionary timescales; sequence capture is primarily used for obtaining conserved loci, whereas RADseq is designed for discovering single nucleotide polymorphisms (SNPs) suitabl…

How cells divide and differentiate is a fundamental question in organism al development; however, the discovery of differentiation processes invarious cell types is laborious and sometimes impossible. Phylogenetic analysisis typically used to reconstruct evolutionary processes based on inherent characters. It could also be used to reconstruct developmental processes based on the developmental c…