Which part of your body is not involved in production of blood cells

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?

Has anyone taken the genetics unit test in connexus? not looking for answers, just a little bit what to expect and some with studying.