Summary
The Control of Gene Expression summary notes
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- AQA
Unit 7: The Control of Gene Expression summary pages for AQA A level biology
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The Control ofGene Expression
Introduction
● Gene Expression:
● The process by which information from a gene is used to synthesize a
functional product, typically a protein or RNA molecule.
● Importance:
● Essential for the development, growth, and functioning of organisms.
DNA Structure and Function
Central Dogma
● DNA to RNA to Protein:
● DNA is transcribed into RNA, which is then translated into a protein.
● Transcription:
● RNA polymerase synthesises mRNA from a DNA template.
● Translation:
● Ribosomes read the mRNA sequence to assemble a protein.
Genetic Code
● Codons:
● Three-nucleotide sequences on mRNA that code for specific amino
acids.
● Start and Stop Codons:
● AUG initiates translation; UAA, UAG, and UGA signal the end.
Regulation of Transcription
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