4 marksCell Division and Variation
CAPE Biology Unit 1 · 2012 · Paper 2 · Question 5(a)(i)
Distinguish between the terms ‘gene mutation' and ‘chromosome mutation'.
The mark scheme is shown once you've answered.
Practise this questionOther parts of this question
- 5(a)(ii)Using sickle-cell anaemia as the example, explain the sequence of changes triggered by the gene mutation that leads to the cells becoming sickle shaped.[5 marks]
- 5(b)(i)Outline the procedure of somatic gene therapy, giving FOUR key steps.[4 marks]
- 5(b)(ii)With reference to cystic fibrosis, comment on ONE difficulty in using gene therapy to treat diseases.[2 marks]
More practice: the rest of this paper · more Cell Division and Variation questions · all CAPE Biology Unit 1 past papers