Discover a world of knowledge and community-driven answers at IDNLearn.com today. Whether it's a simple query or a complex problem, our community has the answers you need.
Sagot :
Answer: 21th
Explanation: Down syndrome a.k.a trisomy 21 because it’s caused by an extra copy of a chromosome 21.
Hope easy and helps! ^^
We are happy to have you as part of our community. Keep asking, answering, and sharing your insights. Together, we can create a valuable knowledge resource. Thanks for visiting IDNLearn.com. We’re dedicated to providing clear answers, so visit us again for more helpful information.