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.
No the amount varies for both but there is not an equal amount
The function of the hepatic portal circulation is to collect absorbed nutrients for metabolic processing or storage.
