Down syndrome is a condition in which a person has an extra chromosome. This affects how a baby’s body and brain develops and can cause mental and physical challenges. Sources: globaldownsyndrome.org, news-medical.net, “On the Antiquity of Trisomy 21” by John M. Starbuck (Journal of Contemporary Anthropology, 2011), downtv.org, Britannica, sciencedaily.com, Smithsonian Magazine, healthcaredailyonline.com, livescience.com and cdc.gov. #history #downsyndrome #downs #downssyndrome #medicine #science #DownSyndromeAwareness #ancient #mesoamerican #archeology #art