Mutations (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What is a mutation?
What is a mutation?
A change in amount or structure of DNA
When do natural mutations occur?
When do natural mutations occur?
When DNA doesn't copy correctly in division
Why are mutation rates generally low?
Why are mutation rates generally low?
DNA has enzymes that repair mutations
What can mutations in somatic cells lead to?
What can mutations in somatic cells lead to?
Cancer
What is a somatic cell?
What is a somatic cell?
A body cell not involved in reproduction
Why are mutations in gametes more serious than in somatic cells?
Why are mutations in gametes more serious than in somatic cells?
They pass to offspring, affecting all cells
What are mutagens?
What are mutagens?
Agents that increase rate of mutations
Which of these is a radiation mutagen?
Which of these is a radiation mutagen?
X-rays
Which of these is a chemical mutagen?
Which of these is a chemical mutagen?
Caffeine
What is a gene mutation?
What is a gene mutation?
A change in a single gene
What causes sickle cell anaemia?
What causes sickle cell anaemia?
A change in the gene for haemoglobin
How many chromosomes are present in Down's Syndrome?
How many chromosomes are present in Down's Syndrome?
47