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6 Cards in this Set
- Front
- Back
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What are the two steps which are involved in genes forming a polypeptides?
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(1) Transcription copies the information of a DNA sequence (a gene) into corresponding information in an RNA sequence. (2) Translation converts this RNA sequence into the amino acid sequence of a polypeptide.
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What is the messenger RNA?
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RNA molecule that forms as a complementary copy of one DNA strand of a partic¬ular gene. This messenger RNA (mRNA) travels from the nucleus to the cytoplasm, where it serves as a template for the synthesis of protein
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What is transcription?
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The process by which RNA forms.
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What are the three steps in transcription?
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Initiation, Elongation and Termination
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When does elongation take place?
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When a special sequence of DNA (promoter) to which a polymerase binds very tightly (the initiation stage)
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What does the process of elongation do?
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RNA polymearse unwinds the DNA about 10 base pairs at a time and reads the template. The RNA transpcript is antiparallel to the DNA template.
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