why are people who live in areas with higher exposure to malaria more likely to have an recessive HBB allele?

Having one recessive allele increases your chances for survival from malaria.

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )