翻訳と辞書 Words near each other ・ RNA polymerase III ・ RNA polymerase IV ・ RNA polymerase V ・ RNA recognition motif ・ RNA silencing ・ RNA spike-in ・ RNA splicing ・ RNA thermometer ・ RNA Tie Club ・ RNA transfection ・ RNA triphosphatase ・ RNA uridylyltransferase ・ RNA virus ・ RNA world ・ RNA-3'-phosphate cyclase ・ RNA-based evolution ・ RNA-binding protein ・ RNA-binding protein database ・ RNA-dependent RNA polymerase ・ RNA-Directed DNA Methylation ・ RNA-induced silencing complex ・ RNA-induced transcriptional silencing ・ RNA-OUT ・ RNA-Seq ・ RNA22 ・ RNAD Broughton Moor ・ RNAD Coulport ・ RNAD Trecwn ・ RNAF ・ RNAI Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク RNA-based evolution ： ウィキペディア英語版 RNA-based evolution RNA-based evolution is a theory that posits that RNA is not merely an intermediate between DNA and proteins, but rather a far more dynamic and independent role-player in determining phenotype. By regulating the transcription of DNA sequences, the stability of RNA, and the capability of messenger RNA to be translated, RNA processing events allow for a diverse array of proteins to be synthesized from a single gene. Since RNA processing is heritable, it is subject to natural selection and contributes to the evolution and diversity of most eukaryotic organisms. ==Role of RNA in conventional evolution== In accordance with the central dogma of molecular biology, RNA passes information between the DNA of a genome and the proteins expressed within an organism. Therefore from an evolutionary standpoint, a mutation within the DNA bases results in an alteration of the RNA transcripts, which in turn leads to a direct difference in phenotype. RNA is also believed to have been the genetic material of the first life on Earth. The role of RNA in the origin of life is best supported by the ease of forming RNA from basic chemical building blocks (such as amino acids, sugars, and hydroxyl acids) that were likely present 4 billion years ago. Molecules of RNA have also been shown to effectively self-replicate, catalyze basic reactions, and store heritable information. As life progressed and evolved over time only DNA, which is much more chemically stable than RNA, could support large genomes and eventually took over the role as the major carrier of genetic information. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「RNA-based evolution」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.