(a) Fig. 3.1 shows the distribution of blood groups in the population of a country. percentage of population with each blood group (%) blood group [Figure 3.1]

1. (a)(i)State the type of variation shown in Fig. 3.1.[1]
2. (a)(ii)Give a reason for your answer to part (a)(i).[1]
3. (a)(iii)The population of this country is approximately 63 million people. Use the information in Fig. 3.1 to calculate the approximate number of people in the country that have blood group B. Show your working in the space below.[2]
4. (b)(i)Calculate the percentage of the population of country U that has blood group AB. Write your answer in the space provided in Table 3.1.[1]
5. (b)(ii)Suggest why the percentage of the population with each blood group varies between the countries listed.[2]
6. (c)Suggest why it might be necessary to know a person's blood group.[2]
7. (d)A child's mother has blood group AB and the child's father has blood group O. Draw a ring around each possible genotype and blood group of the child. genotypes IᴬIᴬ Iᴬi⁰ IᴮIᴮ Iᴮi⁰ IᴬIᴮ i⁰i⁰ blood groups A B AB O[2]

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