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Down syndrome is an abnormality in humans where chromosomes pair 21 has an additional chromosome for a total of 3 chromosomes.Which process leads to Down Syndrome?
A.When two chromosomes combine during mitosis
B.When two chromosomes are not replicated properly during mitosis
C.When two chromosomes does not replicate during meiosis
D.When two chromosomes fail to separate during meiosis

Respuesta :

Answer:

D.When two chromosomes fail to separate during meiosis

Explanation:

I know this because I have three sisters with Down Syndrome