Review 1- Chapter 12. Gene Expression at the Molecular level (1).docx - Chapter 12 Gene Expression at the Molecular level 2 levels in which gene

Review 1- Chapter 12. Gene Expression at the Molecular level (1).docx

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Chapter 12. Gene Expression at the Molecular level 2 levels in which gene functions? level of traits/ character (that means phenotypic character, the things which we can see e.g. hair color) molecular level (within cells) Mutation – any change in the sequence (A,T,G,C) of the gene What is central dogma? From DNA, RNA is synthesized (Transcription) and from RNA, protein is synthesized (Translation) premRNA (mRNA stands for messenger RNA) to RNA – these processing steps are present only in Eukaryote , absent in prokaryotes (true/false) Slide 15 – 3 main types of RNA – transfer, messenger and ribosomal RNA What do you mean by RNA splicing? During transcription when RNA is formed from DNA in eukaryotes, first pre-mRNA is formed. pre-mRNA consists of two parts – introns and exons. Notes - Introns does not have any role in translation (that is synthesis of protein). So, after transcription and before translation, during post processing of RNA, introns are excised from pre-mRNA (RNA splicing) and that results in the formation of matured mRNA. matured mRNA
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  • Fall '19
  • DNA, RNA, Messenger RNA

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