Question

Sickle cell anemia is a recessive disorder that is only expressed if inherited from which of the following?

Both grandparents
Both parents
Only the father
Only the mother

Answer 1

Sickle cell is autosomal recessive, so you'll need to inherit the allele from both parents. Are there any options?

Answer 2

answer choices have been added

Answer 3

Google says:

The sickle cell anemia trait is found on a recessive allele of the hemoglobin gene. This means that you must have two copies of the recessive allele — one from your mother and one from your father — to have the condition. People who have one dominant and one recessive copy of the allele won't have sickle cell anemia.

Sickle cell disease is an inherited condition. Two genes for the sickle hemoglobin must be inherited from one's parents in order to have the disease. 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."