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Biology Question 138 – NEET-UG 2026

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Given below are two statements : Statement I : Down’s syndrome is caused by the absence of one of the X-chromosomes. Statement II : Turner’s syndrome is caused by the presence of an additional copy of the chromosomes. In the light of the above statements, choose the correct answer from the options given below :
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Ninja Strategy•Direct Factual Recall

Accurate knowledge of the genetic causes of Down's syndrome (trisomy 21) and Turner's syndrome (XO monosomy) allows for direct evaluation and elimination of incorrect statements.