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Title: In about 95% of Down syndrome cases, the extra 21st chromosome exists because Post by: genderma on Jun 14, 2015 In about 95% of Down syndrome cases, the extra 21st chromosome exists because
A) of a duplication error during mitosis. B) of injury that occurs during amniocentesis. C) the zygote becomes separated and divides into two zygotes. D) the 21st pair of chromosomes did not separate properly when the egg was formed. Title: Re: In about 95% of Down syndrome cases, the extra 21st chromosome exists because Post by: yari on Jun 29, 2015 Content hidden
Title: Re: In about 95% of Down syndrome cases, the extra 21st chromosome exists because Post by: genderma on Jun 30, 2015 This is correct! Thank you again.
Title: Re: In about 95% of Down syndrome cases, the extra 21st chromosome exists because Post by: yari on Jun 30, 2015 Thanks for the update.
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