Answer:
caused by a genetic defect on chromosome 4. The defect causes a part of DNA to occur many more times than it is supposed to. This defect is called a CAG repeat
Explanation:
Answer:
the lymphatic system only carries fluid away from tissues.
Explanation:
Answer:
I would say Option B
Explanation:
A controlled experiment is where you have two or more independent variables, that way you have an experiment to compare results with.