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Afina-wow [57]
3 years ago
14

Describe non disjunction and the effect it can have on a human

Biology
1 answer:
faust18 [17]3 years ago
4 0

non-disjunction is a pathological event that occurs during the second anaphase in meiosis when sister chromatids are not separated. As a result one of the resulting cells will have 1 extra chromosome and the other will be 1 short. An example of a non-disjunction that can occur in humans is Down syndrome that has a frequency of about 1/1000 people. It is caused by the non-disjunction of the 21st pair of chromosomes.

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