People are different in many ways, from physical appearance to the way they think. We live in a world where we have to deal with diversity, unfortunately not all people are aware of the good manners to adopt. In buses people avoid sitting next to them, they can even be rude and start looking at them due to their clearly unusual appearance. On the street they are bullied and treated unequally. For some of their parents, their birth is more of a dramatic event than a blessing. I'm talking about trisomic people who are born with Down syndrome. I dedicate this essay to this particular case of diversity because I feel really concerned about this problem that some people have regarding their behavior towards them. Three years ago, my mother gave birth to my little sister who suffers from trisomy 11 and at first we were really worried about her future and how she would be seen in our society where people can be healthy and still psychologically retarded. I like to call their syndrome stupidity, as it is not innate and natural but rather a choice. So, what is Down syndrome? What are the signs and symptoms? What causes it? What impact does it have on society? First of all, Down syndrome, also called trisomy 21, is a condition in which the number of chromosomes contained in human cells is more or less than 23 pairs and causes a delay in the child's mental development. and physically. Down syndrome is the most frequent genetic disease. There are three types of Down syndrome: trisomy 21 accounts for 95% of cases, translocation accounts for approximately 4%, and mosaicism accounts for approximately 1%. In reality, according to some researchers recently conducted in the United States, one in 691 children is born... middle of paper... and that's terribly sad. Then I told myself several times that this was a birth, a happy event, not some funeral. Why is everyone still sad? She was an adorable and beautiful little girl, no one would have noticed her disability if the doctors hadn't told us. Hopefully we've started looking at it differently. Now my little sister is so adorable that sometimes I wonder why there is such purity in this world. In short, Down syndrome is okay! Works Cited1. Nelson. "76." Down Syndrome and Other Chromosome Number Abnormalities." 19th ed. Philadelphia: Saunders, 2011. Page No. Print.2. Kent, RD; Vorperian, HK (February 2013). "Speech Impairment in Down Syndrome: A review." Journal of Speech, Language, and Hearing Research: JSLHR 56 (1): 178–210.3 Skallerup, S.. (Ed.) Bethesda "Children with Down syndrome: A guide for new parents." Honeysuckle House. (2008)