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book Biology 8th Edition by Kenneth Mason ,Jonathan Losos,Susan Singer,Peter Raven,George Johnson cover

Biology 8th Edition by Kenneth Mason ,Jonathan Losos,Susan Singer,Peter Raven,George Johnson

النسخة 8الرقم المعياري الدولي: 978-0077536848
book Biology 8th Edition by Kenneth Mason ,Jonathan Losos,Susan Singer,Peter Raven,George Johnson cover

Biology 8th Edition by Kenneth Mason ,Jonathan Losos,Susan Singer,Peter Raven,George Johnson

النسخة 8الرقم المعياري الدولي: 978-0077536848
تمرين 7
The frequency of the sickle cell allele ( S ) is about 0.12 in African locales exposed to malaria but has dropped over about 15 generations to about 0.003 in places where malaria has been eradicated (USA). Given the mechanism for heterozygote advantage how long must malaria be suppressed in Africa before we would expect S to be purged
a. It will never be lost.
b. Less than 15 generations.
c. More than 15 generations.
d. Not enough information to predict.
التوضيح
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Biology 8th Edition by Kenneth Mason ,Jonathan Losos,Susan Singer,Peter Raven,George Johnson
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