I need help with these 4 questions! due NOW WILL GIVE BRAINLIST What effect did the sickle cell gene have on the people who were carriers of the mutation?

Why has the sickle cell gene persisted even when sickle cell anemia is so debilitating?

What are the odds that the child of parents who each carry one normal gene and one sickle cell mutation gene will have sickle cell anemia?

What are the odds that a child of two carrier parents will also be a carrier and, thus, be protected from malaria?

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis