Answer:
B. Hemophilia
Step-by-step explanation:
A karyotype is a visual representation of an individual's chromosomal makeup, which can be used to diagnose certain genetic disorders that are caused by chromosomal abnormalities. Examples of such disorders include Down Syndrome, Kleinfelter's Syndrome, and Turner's Syndrome, which can all be diagnosed using a karyotype.
Hemophilia, on the other hand, is a genetic disorder that affects the body's ability to produce certain proteins involved in blood clotting. It is caused by a mutation in a specific gene and cannot be diagnosed using a karyotype. Instead, a blood test is typically used to diagnose hemophilia.