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Uworld is confusing me. It says Fragile X syndrome is the #1 cause of mental ******ation by inheritance (which makes sense since it is X-linked, and Down Syndrome isn't passed down by inheritance)
However, another question dealing with Down Syndrome states that "Down Syndrome is the 2nd most common cause of mental ******ation." What would be the first?
However, another question dealing with Down Syndrome states that "Down Syndrome is the 2nd most common cause of mental ******ation." What would be the first?