G. what happens if a homologous pair of chromosomes fails to separate, and how might this contribute to genetic disorders such as down syndrome and cri du chat syndrome?

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Jada Charles

Biology

20 May, 07:10

G. what happens if a homologous pair of chromosomes fails to separate, and how might this contribute to genetic disorders such as down syndrome and cri du chat syndrome?

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Jaylon · Answer 1

Cri du chat syndrome is caused by a partial deletion of chromosome 5p. Down syndrome is a result of an extra copy of chromosome 21. Non-disjunction occurs and the result is that one gamete has 2 copies of one chromosome and the other has no copies of that chromosome.