asked 4.0k views
2 votes
Down's syndrome is a condition where an extra chromosome is produced on the _____ chromosome.

12th
16th
21st
23rd

1 Answer

3 votes
Down;s syndrome is also known as trisomy 21 because it is caused by an additional copy of chromosome 21. The correct answer is the third one: 21st.
answered
User Mdthh
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8.0k points
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