Selection has obviously affected the frequency of alleles for sickle cell hemoglobin and perhaps the frequencies for cystic fibrosis. What factors might be responsible for inter-population differences in other alleles such as the ABO system?

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The Answer of Selection has obviously affected the frequency of alleles for sickle cell hemoglobin and perhaps the frequencies for cystic fibrosis. What factors might be responsible for inter-population differences in other alleles such as the ABO system?

Selection Has Obviously Affected the Frequency of Alleles for Sickle