Down’s syndrome is also known as trisomy 21 due to the presence of part or the entire third copy of the chromosome 21. Named after the British physician John Langdon Down who first described the syndrome in 1866, it can be detected after the baby was born or through prenatal screening. According to some statistics, about 80% of Down’s syndrome cases in US occur in mothers who are under 35 years of age. One person in every 800 individuals has Down’s syndrome.
Having a child with this defect might be very stressful in the eyes of individuals who do (3 comments)