When human X and Y chromosomes fail to undergo a crossover in meiosis, there is an increased risk of:

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When X and Y chromosomes fail to undergo a crossover in meiosis, there is an increased risk of nondisjunction, which is the failure of chromosomes to separate properly during cell division. This can lead to conditions such as Klinefelter syndrome and Turner syndrome, which are caused by the presence of extra or missing X or Y chromosomes.

When Human X and Y Chromosomes Fail to Undergo a Crossover