Is Down Syndrome Caused by Chromosome 22 or Chromosome 21?
Learn why Down syndrome is caused by trisomy 21, not chromosome 22. Understand the genetic basis of this condition in simple terms.
25 views
No, chromosome 22 is not responsible for Down syndrome. Down syndrome is primarily caused by a trisomy of chromosome 21, meaning individuals have three copies of chromosome 21 instead of the usual two. This condition is also known as Trisomy 21.
FAQs & Answers
- What chromosome causes Down syndrome? Down syndrome is caused by an extra copy of chromosome 21, known as trisomy 21.
- Is chromosome 22 related to Down syndrome? No, chromosome 22 does not cause Down syndrome; the condition is specifically linked to chromosome 21.
- What is trisomy 21? Trisomy 21 is a genetic condition where an individual has three copies of chromosome 21 instead of the usual two, leading to Down syndrome.
- Can other chromosomes cause genetic disorders similar to Down syndrome? Yes, other trisomies such as trisomy 18 and trisomy 13 cause different genetic disorders, but they are distinct from Down syndrome.