Biology, 19.07.2019 11:00, jasonweber8718
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. this gene provides some protection from malaria, a serious disease that is wide-spread in sub-saharan africa. discuss an evolutionary process that could account for the different percentages among residents of the two regions.
Answers: 1
Biology, 21.06.2019 14:30, goonnation9311
Acladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits. a scientist discovers a new organism that lacks limbs and does not have a true backbone. the organism lays eggs to produce offspring and has a cartilage-like rod known as a notochord running along its dorsal surface. on the cladogram below, select the species to which the newly discovered organism is most closely related.
Answers: 1
The gene that causes sickle cell disease is present in a higher percentage of residents of sub-sahar...
Mathematics, 28.10.2020 16:30