Sickle cell disease is inherited as an autosomal recessive trait.The genotype of an individual with sickle cell disease is
A)homozygous dominant.
B)homozygous recessive.
C)heterozygous dominant.
D)heterozygous recessive.

Question

Quizplus · Accepted Answer

Sickle cell disease is an autosomal recessive trait, which means an individual must inherit two copies of the abnormal hemoglobin gene (HbS) to have the disease. Therefore, the only genotype that can result in sickle cell disease is homozygous recessive (ss).

Sickle Cell Disease Is Inherited as an Autosomal Recessive Trait