Gene Mutation (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 is a mutation?
What is a mutation?
Change in DNA quantity or base sequence
Why are mutations in gamete cells significant?
Why are mutations in gamete cells significant?
They are heritable and passed to offspring
How does the degenerate genetic code protect against substitution mutations?
How does the degenerate genetic code protect against substitution mutations?
Most amino acids coded by multiple triplets
Why are deletion mutations generally more severe than substitution mutations?
Why are deletion mutations generally more severe than substitution mutations?
They affect entire protein downstream
What is a reading frame shift?
What is a reading frame shift?
All subsequent triplets shifted by one
What is polyploidy?
What is polyploidy?
Three or more complete chromosome sets
What is non-disjunction?
What is non-disjunction?
Homologous pairs fail to separate
How many chromosomes do individuals with Down's syndrome have?
How many chromosomes do individuals with Down's syndrome have?
47
How many chromosomes does bread wheat (Triticum aestivum) have?
How many chromosomes does bread wheat (Triticum aestivum) have?
42
How can substitution mutations affect enzyme function?
How can substitution mutations affect enzyme function?
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