3. determine the genotypes of the parents if the father is blood type a, the mother is blood type b, the daughter is blood type o, one son is blood type ab, and the other son is blood type b.

Which of the following is an example of this type of co-evolution

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that