Blood group is inherited genetically. Humans have four blood groups: A, B, AB and O. Surveys were done in two separate countries to find the percentage of each population in every blood group. The results are shown in Fig. 5.1.
(a(i))[4]
Complete the sentences below to describe the information in Fig. 5.1.
The least common blood group in both countries is [BLANK].
In country X, blood group [BLANK] is the most common, whereas in country Y it is blood group [BLANK].
The proportion of country X's population with blood group A is [BLANK]%.
(a(ii))[2]
Suggest what type of variation is displayed in Fig. 5.1 and give a reason for your answer.
(b)[1]
Identify one word in the sentences that is incorrect.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “blood group AB” …