Answer:
Increased frequency of the allele for sickle cell anemia
Explanation:
Sickle cell anemia is fatal in homozygous genotype. The homozygous genotype having two copies of the allele for sickle cell anemia is not favored by natural selection due to its reduced survival success.
However, the heterozygous genotype for sickle cell anemia with one allele for the disease exhibit malaria resistant. The presence of one allele is not fatal for the organisms as the presence of one normal allele ensures the formation of some normal hemoglobin protein and RBCs to support the oxygen delivery to the body parts.
The increased survival success of heterozygous genotype in malaria-prone regions allowed their natural selection. This increased the frequency of allele for the sickle cell anemia in the gene pool of the local population and increased the frequency of heterozygous dominant genotype.
Which lines in the description of the knight from the "General Prologue" of The Canterbury Tales tells us that he had been part of the Crusades, militaryexpeditions in which Christians sought to win the Holy Land?
<span>And <u>he'd fought for our faith</u> at Tramissene Three times in lists, and each time slain his foe.</span>
The answer is C. the sun gives energy to the grass, the grass is eaten by the rabbit, the rabbit is eaten by the bear.
