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8090 [49]
3 years ago
8

Sickle-cell trait is apparently an adaptation for the prevention of __________.

Biology
1 answer:
ikadub [295]3 years ago
4 0
Sickle cell trait is apparently an adaptation for the prevention of Malaria.  Sickle cell trait is a condition in which the red blood cells are abnormally shaped, if they inherit two faulty copies of the gene for the oxygen-carrying protein hemoglobin. The faulty gene persists because even carrying one copy of it confers some resistance to malaria. As a result, the frequencies of sickle cell carriers are high in malaria endemic areas. 
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The net primary productivity is usually more than 80% of gross primary productivity.
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b. False

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