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? ??????

? ??????

? ??????. ?????? 1868?? ??????? F.Miescher. ?????????? ?????????? ?????????? ?????? nuclein?. ????????????. ??????????. ???????? RNA? ???? ? ribonucleic acid- RNA ?: ?? RNA(transfer RNA- tRNA ) ? ?? RNA(messenger RNA- mRNA )? ??? RNA?ribosomal RNA- rRNA ? ?? ???????????????.

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1.27k views • 102 slides
DNA + RNA

DNA + RNA

DNA + RNA. Dan Graur. The hereditary information of all living organisms, with the exception of some viruses, is carried by deoxyribonucleic acid ( DNA ) molecules. DNA is made of four nucleotides. adenine (A). guanine (G). cytosine (C). thymine (T). 2 purines (R):. 2 pyrimidines (Y):.

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? 14 ? RNA ????? ---- ?? RNA Biosynthesis----Transcription

? 14 ? RNA ????? ---- ?? RNA Biosynthesis----Transcription

? 14 ? RNA ????? ---- ?? RNA Biosynthesis----Transcription. ?? ???? ???????????? ????????? ??????. ??? transcription ? ? DNA ????? RNA ???? RNA polymerase ??????? mRNA ??????? DNA ?????? mRNA ?????????????. 1 ????????????.

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465 views • 23 slides
? 14 ? RNA ????? - ?? RNA Biosynthesis--Transcription

? 14 ? RNA ????? - ?? RNA Biosynthesis--Transcription

? 14 ? RNA ????? - ?? RNA Biosynthesis--Transcription. ??? transcription ? ? ? DNA ????? RNA ??? ? RNA polymerase ??????? mRNA ??????? DNA ?????? mRNA ????????????? transcription ??. 1 ?????????????. ???? DNA ????? RNA, ??????? DNA ?????????????

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585 views • 23 slides
Chapter 12 & 13

Chapter 12 & 13

Chapter 12 & 13. DNA and RNA. 1. The role of DNA is to ___. A. Store, copy and create heredity information B. Copy, modify and transmit heredity information C. Store, copy and transmit heredity information. 2. What is a bacteriophage ? A. A bacteria B. A virus C. a plant. 3.

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214 views • 13 slides

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