Mutations

Question 1

When does a mutation occur?

Answer 1

when the sequence of DNA bases is altered when DNA does not replicate properly or ionizing radiation

Question 2

What do most harmful mutations do?

Answer 2

• Cause cancer
• Cause the production of abnormal protein channels that do not function properly
• Cause different shaped protein molecules to be made

Question 3

A beneficial mutation example

Answer 3

Mutations in some bacteria enable them to be resistant to antibiotics, increasing their chance of survival.