Answered: While malaria incidence is highest in…

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter15: Animal Evolution

Section: Chapter Questions

Problem 1CT

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Question

While malaria incidence is highest in Africa, it is also present outside of Africa, and is endemic to Colombia, Brazil, Peru and Venezuela. Malaria has NEVER been present in the land that now comprises the Unites States of America. What evolutionary mechanism probably explains the incidence of G6PD deficiency in the U.S.?

gene flow

natural selection

genetic drift

mutation

Expert Solution

Step 1

Malaria is a disease that is caused by the plasmodium parasites and is transmitted by mosquitoes. The common symptoms are fever, headache, and chills. G6PD (Glucose 6 phosphate dehydrogenase) is an enzyme of the cytosol that helps in the production of NADPH (nicotinamide adenine dinucleotide phosphate), which is a donor of electrons in reductive biosynthesis reactions and defense against the oxidizing agent.

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