Down’s Syndrome
Down’s syndrome is a genetic condition in which a person has one extra copy of chromosome 21. This is why this syndrome is also called “trisomy 21” (Down’s syndrome trisomy 21). This genetic anomaly causes changes and differences in how the baby develops, both mentally and physically. Some characteristics are common in all people with Down’s syndrome, especially physical and physiological characteristics, but there are also differences regarding their mental abilities, such as their IQ.
Before we dive in into the subject of genetics and symptoms of Down’s syndrome, let’s have a quick look at some history facts regarding this subject.