Question
Is Down syndrome inherited?
Answer
Down syndrome is caused by chromosomal abnormalities. Modern medicine has confirmed that the incidence of Down syndrome is related to the mother’s age, especially common in elderly pregnant women. The abnormality of the 21st chromosome is responsible for the condition, which can occur in three types: trisomy, translocation, and mosaicism. Advanced maternal age and egg aging are important reasons for the occurrence of non-separation.