B3. Proteins and mutations Qs

Question 1

3 Diseases caused by mutations?

Answer 1

• Cancer
• Sickle cell anaemia
• Cystic fibrosis

Question 2

Explain why the mutation to produce pale skin in humans can be useful?

Answer 2

People with pale skin in temperate regions of the world can allow their skin to make Vitamin D because weaker sunlight can penetrate their paler skin.

Question 3

Rabbit fur is normally grey/brown fur, a mutation can lead to white furs rabbit? Name the situation that the white fur would be useful or harmful?

Answer 3

The rabbit can camouflage with its white fur in places with snow or ice so it will have a higher chance of survival, but in parts of the world where there are no ice or snow than it will stand out more and likely to be spotted by predators.

Question 4

Example of gene mutation in human that is neutral?

Answer 4

• Blond hair

- Blue eyes