Question

The map shows the allele frequency of sickled hemoglobin (HbS) and malaria endemicity in Africa.

(Picture Below)


Which statement best explains the relationship between HbS allele frequency and malaria endemicity in Africa?

A)When an area is malaria free, the HbS allele frequency is between 0 and 2.02.

B)When an area is holoendemic, the HbS allele frequency is between 0.52 and 4.04.

C)When an area is malaria free, the HbS allele frequency is between 12.64 and 18.18.

D)When an area is holoendemic, the HbS allele frequency is between 0 and 0.51.

Answer 1

The answer is A.

Hope this helps :)

Answer 2

In the two maps that show the allele frequency of sickled hemoglobin (HbS) and malaria endemicity in Africa, it can be seen that in the regions with no malarial outbreak or malaria-free areas coincide with the grey to lighter shades of red in the heat map of the allele frequency of HbS. The color coding in the heat map for the allele frequency tells us that the frequencies range from 0 to 2.02 in the malaria-free areas.

Hence the answer is A)When an area is malaria free, the HbS allele frequency is between 0 and 2.02.