Evaluation of DNA Technology (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What strategy does gene therapy use for sickle cell disease based on fetal haemoglobin research?
What strategy does gene therapy use for sickle cell disease based on fetal haemoglobin research?
Reactivating fetal haemoglobin production
What is epigenetics?
What is epigenetics?
Heritable changes in gene expression
Why does fetal haemoglobin reduce sickle cell disease symptoms?
Why does fetal haemoglobin reduce sickle cell disease symptoms?
It has greater oxygen affinity
What happens when histone acetylation decreases?
What happens when histone acetylation decreases?
DNA packaging tightens, genes switch off
What effect does increased DNA methylation typically have?
What effect does increased DNA methylation typically have?
Inhibits gene expression
What function does the epigenome serve in cells?
What function does the epigenome serve in cells?
A cellular memory system
Which environmental factors can modify gene expression?
Which environmental factors can modify gene expression?
Diet, stress levels, and toxin exposure
What challenge do therapeutic genes face after introduction through gene therapy?
What challenge do therapeutic genes face after introduction through gene therapy?
They must integrate with chromatin structures
What is an advantage of DNA technology approaches?
What is an advantage of DNA technology approaches?
They work with natural regulatory mechanisms
What limitation affects DNA technology outcomes?
What limitation affects DNA technology outcomes?
Environmental factors unpredictably influence outcomes