Which of the following statements about sickle cell disease is true?
it is caused by having 3 copies of chromosome 21.
it is a mild, painless illness that does not limit lifespan.
it primarily affects people of african descent.
it causes a person’s mucus to the excessively thick and sticky.

It primarily affects people of African descent.

In parts of Africa where malaria is common, a high per cent of the population

has the sickle cell trait. This is due to the fact that people with sickle cell trait are more resistant to malaria than others.

hello! i don't think anyone has what you're looking for.. try messaging your school and asking them for the quiz?

take a break move to stretching and slowly work back into physically exercising if the problem continues go to a doctor or physical therapist