BIOLOGY 1A03 Lecture Notes - Lecture 3: Gene Expression, Stem-Loop, Enzyme

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BIOLOGY 1A03 Full Course Notes
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BIOLOGY 1A03 Full Course Notes
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Reading the blueprint: dna molecules in prokaryotes/eukaryotes are the same (a, t, c, g, genes: sections of dna molecules that contain info that is transcribed into rna copies. Info is translated (interpreted) for cellular processes: code for specific proteins, dna specifies a sequence of rna, which specifies amino acids in a protein, gene expression: transition from dna to mrna to protein. The central dogma: describes a two-step process: transcription and translation. Information in genes flows into proteins dna rna . Transcription in prokaryotes: no nucleus to separate the processes of transcription and translation, when bacterial genes are transcribed their transcripts can be immediately translated. Two types of terminator sequences in prokaryotes: rho independent: terminator sequences (inverted nucleotide) folds on itself to form. Post transcriptional modifications: addition of the 5" cap: 5" cap on mrna consists of 7-methylguanosine attached to a 5"-

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