Gene Mutations (AQA A-Level Biology): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
When do gene mutations typically occur?
When do gene mutations typically occur?
During DNA replication
Which outcome is NOT possible for a substitution mutation?
Which outcome is NOT possible for a substitution mutation?
Frame shift in reading frame
In sickle cell anaemia, which codon change occurs in the β-globin gene?
In sickle cell anaemia, which codon change occurs in the β-globin gene?
GAG to GTG
Why do deletion mutations cause frame shifts?
Why do deletion mutations cause frame shifts?
Genetic code read in triplets
What happens if three extra bases are added to a DNA sequence?
What happens if three extra bases are added to a DNA sequence?
No frame shift occurs
What is a translocation mutation?
What is a translocation mutation?
Bases move to different chromosome
What is the natural spontaneous mutation rate per generation?
What is the natural spontaneous mutation rate per generation?
1-2 per 100,000 genes
Which is an example of high energy ionising radiation that can cause mutations?
Which is an example of high energy ionising radiation that can cause mutations?
X-rays
Where must a mutation occur to be passed to offspring?
Where must a mutation occur to be passed to offspring?
In gametes
What happens in an inversion mutation?
What happens in an inversion mutation?
Bases rejoin in reverse order