Genetics and evolution: Populations (Hardy–Weinberg)
From Mock A · Paper 2 (topics 5–8)
7.34 marks
Cystic fibrosis is caused by a recessive allele. In a population, 4 in every 100 people have the condition. Use the Hardy–Weinberg equation to calculate the percentage of people who are carriers.
From Mock B · Paper 2 (topics 5–8)
8.13 marks
In a population, 9% of individuals show a recessive phenotype. Use the Hardy–Weinberg equations to calculate the percentage of heterozygotes.
From Mock B · Paper 2 (topics 5–8)
16.23 marks
Explain why the gene drive spreads through a population much faster than a normal allele (sentences 3 and 4).
From Mock B · Paper 2 (topics 5–8)
16.52 marks
A cage started with 1 000 mosquitoes, 10% of which carried the gene drive. If 95% of offspring inherit the drive each generation from carriers, explain why the number of carriers would rise only slowly in the first generation.
Score 0 / 12 · 0 of 4 marked
This paper is written by Plasmo in the style of the AQA A-Level Biology exam. It is not a past paper and is not produced or endorsed by the exam board.