patypatyok
patypatyok patypatyok
  • 26-05-2017
  • Physics
contestada

what cause down syndrome

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JavaXD JavaXD
  • 26-05-2017
Missing Chromosomes! xD


Weird Question! 
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lindseyspearman
lindseyspearman lindseyspearman
  • 26-05-2017
It is caused by an additional genetic material from chromosome 21. Implying, that person would have three number 21 chromosomes. (In most cases)
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