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Home Q & A Board Science-Related Homework Help Psychology Developmental Psychology
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genderma genderma
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8 years ago
Which of the following statements concerning Down syndrome is FALSE?
A) Down syndrome is also referred to as Trisomy 21.
B) In Down syndrome there is a defective gene on the X chromosome.
C) Down syndrome is the single most common genetic cause of mental retardation.
D) In Down syndrome babies are born with an extra 21st chromosome.
Textbook 
The World of Children

The World of Children


Edition: 3rd
Author:
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yariyari
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8 years ago
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genderma Author
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#2
8 years ago
Merci beaucoup!
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#3
8 years ago
Thanks for the update.
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