Draw a picture showing the possible scenarios

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Draw a picture showing the possible scenarios

Question: Down syndrome is the result of an extra 21st chromosome in humans. In the process of meiosis for the mother, give all possible stages where it could lead to an offspring with Down syndrome, given that both parents are normal. Draw a picture showing the error in one of the possible scenarios, but for the sake of simplicity, imagine that the diploid number for human chromosomes is 4 instead of 46.

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