Question Papers

Question 1

How are new alleles formed

a) by crossing over during meiosis
b) by mutation in the DNA of a gene

Answer 1

B
Crossing over - creates new combinations of alleles
New alleles are created by mutations

Question 2

On a ship at sea there is an outbreak of a disease affecting the human digestive system
Explain how cleanliness in food,water and personal hygiene practises on the ship could assist in controlling this disease

Answer 2

✅boil water 💦
✅correct food preparation -cook thoroughly
✅cover mouth/nose during a sneeze 🤧
✅isolate healthy from 🤒
✅Proper disposal and treatment of sewage from the ship 🚢
✅handle with gloves 🧤