Answers: 1
Biology, 21.06.2019 18:30, narutoxptheninja
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.
Answers: 2
Biology, 22.06.2019 03:00, flores1717
What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.
Answers: 2
Are specialized cells that conduct impulses through the nervous system....
Mathematics, 09.11.2020 01:40
Mathematics, 09.11.2020 01:40
Medicine, 09.11.2020 01:40
Mathematics, 09.11.2020 01:40
Physics, 09.11.2020 01:40
Mathematics, 09.11.2020 01:40