3.5.7 Control of Gene Expression (AQA A2 Biology)

Overview of gene expression on the AQA A2 level biology syllabus. Includes totipotency, cell specialisation, stem cells, embryonic stem cells and the regulation of transcription and translation. 

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3.5.7 Gene expression is controlled by a number of features




TOTIPOTENCY AND CELL SPECIALISATION

What are totipotent cells?
Totipotent cells are cells which can mature into any body cell.
KEY TERMS
Specialisation: The process of a totipotent cell becoming specialised to
express one gene.
Specialised: The cell has a specific…

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3.5.7 Gene expression is controlled by a number of features




FOR AGAINST
Embryo at this stage has no Undermines respect for human
resemblance to a human being life. Playing `god'.
and is just cells. Lead to older foetuses/babies
Wrong to allow human being used.
suffering which can be Lead to…

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