Sickle cell anemia<span> is the result of a point mutation, a change in just one nucleotide in the gene for hemoglobin. This mutation </span>causes<span> the hemoglobin in red blood cells to distort to a sickle shape when deoxygenated.</span>
False it is not just used in the mater of science
One animal that has greatly benefited form natural selection is the giraffe. It's neck has grew longer and longer so that they can reach the leaves on the top of trees.
It’s B. Shows a network of food chains
