Suppose That a Child Developed Mild Symptoms of Sickle-Cell Anemia

Multiple Choice

Suppose that a child developed mild symptoms of sickle-cell anemia. It may be correctly inferred that

A) the child is heterozygous for the sickle-cell trait.
B) the child received the sickle-cell trait from both parents and is homozygous for this disorder.
C) the sickle trait is absent from the child's alleles.
D) the symptoms developed from experiential learning.