Reem295
Reem295 Reem295
  • 18-10-2020
  • Biology
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where did the extra chromosome in down syndrome come from?​

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kimberlytamang12
kimberlytamang12 kimberlytamang12
  • 18-10-2020
Down syndrome results when abnormal cell division involving chromosome 21 occurs. These cell division abnormalities result in an extra partial or full chromosome 21.
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