Question

People who carry an allele for normal haemoglobin and an allele for sickle cell are resistant to malaria. They are example of

• A. heterozygote advantage
• B. diploidy
• C. out breeding
• D. recessive superiority

Answer 1

The correct option is A heterozygote advantage

Carriers of the sickle cell allele are resistant to malaria, because the parasites that cause this disease are killed inside sickle-shaped blood cells.