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Title: Rene has Down syndrome, which means that she has an extra: Post by: Jessica_doll on Jul 29, 2016 Rene has Down syndrome, which means that she has an extra:
A) chromosome 7. B) chromosome 23. C) chromosome 18. D) chromosome 21. Title: Re: Rene has Down syndrome, which means that she has an extra: Post by: luciano on Aug 11, 2016 Content hidden
Title: Re: Rene has Down syndrome, which means that she has an extra: Post by: Jessica_doll on Aug 19, 2016 :heart: Thanks
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