The diseаse sickle-cell аnemiа is cоmmоn in malaria-infested areas because individuals that are heterоzygous for the gene (AS) have enhanced resistance to malaria compared to other individuals (AA). Individuals with severe sickle-cell anemia (SS) often die before reproduction. If this population moves to an area without malaria, what will happen to the allele frequency of the A allele over time?