No links pls Scientists have concluded that the AS genotype as an adaptation for survival in Africa. Support that conclusion in terms of natural
selection.

A) The frequency of the AS allele increases proportionately to the number of
Africans in the population.

B) Because malaria does not exist in the U. S. the AS allele does not provide
any advantage to survival there.

C) As the frequency of malaria increases so does the frequency of the AS
allele combination as it protects against getting malaria.

D) Those without the AS genotype die out due to sickle cell disease; the
populations left with a greater allelic frequency of the AS genotype.