ExamRizzAQA BiologyBiology
Leave

2023 · Paper 2 · Question 4 · 7 marks

Save
4.1

Name the type of interaction between the two genes affecting fur colour.

1 mark
4.2

What phenotype would a cat with the following genotype have?

XGXBff

1 mark
4.3

Complete the genetic diagram to show all the possible genotypes and the ratio of phenotypes expected in the offspring of this cross.

Phenotypes of parents XGXGFf x XBYff

Genotypes of offspring

Phenotypes of offspring

Ratio of offspring phenotypes

3 marks
4.4

In a population, 36% of cats had the F allele and had white fur.

Use the Hardy–Weinberg equation to calculate the frequency of the f allele in this population.

Show your working.

Answer ______________

2 marks