Tony Allison examined the allele frequency of hemoglobin (HbA,or HbS)in populations of Kenyon tribes.A surprising result of this study was that:
A)the HbS and HbA alleles were evenly distributed among Kenyan tribes.
B)the HbS alleles appeared more frequently in men than in women.
C)tribes living in arid or highland regions had high frequencies of HbS alleles.
D)tribes living near Lake Victoria had a low frequency of HbS alleles.
E)tribes living in arid or highland regions had low frequencies of HbS alleles.

Question

Quizplus · Accepted Answer

Tribes living in arid or highland regions had low frequencies of HbS alleles because these areas have lower incidences of malaria, which is the selective pressure maintaining the HbS allele.

Tony Allison Examined the Allele Frequency of Hemoglobin (HbA,or HbS)in