Answer:
A person who receives a gene for sickle cell disease from one parent and a normal gene from the other has a condition called "sickle cell trait." Sickle cell trait produces no symptoms or problems for most people. Sickle cell disease can neither be contracted nor passed on to another person.
Answer:
certain spiecies can thrive
Explanation:
Answer:
Because the surrounding doesn't go exactly go into the body.
It has to go through the clothes first
