I agree, it should be "genetics are", instead of "genetics is". The third sentence is incorrect
The second sentence is incorrect. The word (is) should be (are).
Upon analyzing each sentence, all of them appear to use correct grammar regarding the subject-verb agreement. Therefore, there seems to be no error in any of the sentences provided. The understanding of terms like 'statistics' can vary based on context but does not suggest an outright mistake in this instance.
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