Identical Twins Have Identical Genes

Identical twins have identical genes. If one twin has type 1 diabetes, the other twin will also have type 1 diabetes approximately 50% of the time. What can you conclude from this information?

A) Genes are not the sole reason that individuals acquire type 1 diabetes.
B) Genes are the sole reason that individuals acquire both types of diabetes.
C) The hereditary factor in type 1 diabetes has not been well studied.
D) Twins with type 2 diabetes have lower insulin levels than 50% of twins with type 1 diabetes.
E) Twins with type 2 diabetes have a 50% lower probability of showing sugar in their urine than those with type 1 diabetes.

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