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DNA Transcriptio6 - DNA Transcription Terms Canonical...

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DNA Transcription Terms Canonical promoter - Refers to the ideal configuration of a promoter region. The region includes three trademarks: the –35 region, the –10 region, and a 17 base pair space in between the two regions. The degree of conformity to this consensus sequence determines promoter strength. Only prokaryotes have canonical promoter regions. Chromatin - The material of which chromosomes are made. Contains DNA, histones, and nonhistone proteins. Chromatin is found in the nucleus of eukaryotic cells. Hairpin loop - A structure formed when a single strand of DNA or RNA folds back on itself via regions of complementary base pairing. Can be used as a termination signal for DNA transcription. Hybrid - A complex that is a mixture of two distinct subunits. Messenger RNA - An RNA molecule that specifies the amino acid sequence of a protein. Nucleosome - A bead-like subunit of eukaryotic chromosomes. Composed of short lengths of DNA wrapped around histone proteins. A subunit of chromatin.
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