Sickle-cell anemia is caused by a
A) recessive autosomal gene.
B) recessive sex-linked gene.
C) dominant autosomal gene.
D) combined interaction of several genes.
E) simple dominant gene.

Question

Quizplus · Accepted Answer

Sickle-cell anemia is caused by a mutation in the hemoglobin gene, which is autosomal (located on a non-sex chromosome) and recessive, meaning two copies of the mutated gene are needed for the disease to manifest.

Sickle-Cell Anemia Is Caused by a