Biology, 28.08.2019 14:30 kelseydavid69

People who are heterozygous for sickle cell disease are generally healthy because they
a) are resistant to me different diseases
b) have some normal hemoglobin in their red blood cells
c) are not affected by the gene until their elderly
d) produce more hemoglobin then they need

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People who are heterozygous for sickle cell disease are generally healthy because they
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