Paper 2 H - SAMPLE SET 1 Q3
3) Many different types of animals are produced using selective breeding.
Some cats are selectively bred so that they do not cause allergies in people.
3.1) Suggest two other reasons why people might selectively breed cats. [2 marks]
1. ________________________________
2. ________________________________
3.2) Selective breeding could cause problems of inbreeding in cats.
Describe one problem inbreeding causes. [1 mark]
3.3) Many people have breathing problems because they are allergic to cats.
The allergy is caused by a chemical called Fel D1.
Different cats produce different amounts of Fel D1.
A cat has been bred so that it does not produce Fel D1.
The cat does not cause an allergic reaction.
Explain how the cat has been produced using selective breeding. [4 marks]
(Total for Question 3 = 7 marks)
Some cats are selectively bred so that they do not cause allergies in people.
3.1) Suggest two other reasons why people might selectively breed cats. [2 marks]
1. ________________________________
2. ________________________________
3.2) Selective breeding could cause problems of inbreeding in cats.
Describe one problem inbreeding causes. [1 mark]
3.3) Many people have breathing problems because they are allergic to cats.
The allergy is caused by a chemical called Fel D1.
Different cats produce different amounts of Fel D1.
A cat has been bred so that it does not produce Fel D1.
The cat does not cause an allergic reaction.
Explain how the cat has been produced using selective breeding. [4 marks]
(Total for Question 3 = 7 marks)