- Training Courses - Teacher Center Trisomy 21 Tattoo References. Portrait of trisomie 21 child girl outside having fun on a park. For many mums, the three arrows are a powerful symbol of the genetic condition, also known as trisomy 21, because people with down syndrome have three copies of their 21st.
Down syndrome is three copies of your 21st chromosome, or trisomy 21. Trisomy 21 ( down syndrome ). My wife is 16 weeks pregnant and yesterday we got our triple marker test result which showed 1:213 high risk trisomy 21.
