Down syndrome (or Down’s syndrome) is a generic chromosomal disorder which is caused by the presence of an extra chromosome 21. It is also known as “trisomy 21”. This condition leads to deficiencies in both cognitive ability and physical growth. It is typically related with physical growth delays, characteristic facial features, and minor to moderate intellectual disability. The IQ level of an adult decreases because of this. This genetic disorder, which differs in severity, sometimes causes lifelong intellectual disability and developmental delays, and in some people it causes health problems too. Down syndrome is the most common heritable chromosomal disorder and cause of learning disabilities in children. If we could build better understanding
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They have relatively younger mind compared to others as adults have mental level of nearly similar to 8 to 9 year old. They have eyes having an upward slant, slanted fissure, epicanthic skin folds on the inner corner, and white spots on the iris. Eyes don’t look like normal people. People with Down syndrome have relatively low or poor muscle tone. They have flat nasal bridge. They have single crease over palm. They have protruding tongue due to small mouth and large tongue. Growth in their height is slower which results in adults who tend to have short physique. They have increased risk of obesity. They have relatively short neck. Their face is relatively flat and wide. Children with Down syndrome often have a speech delay and require speech therapy to assist with expressive language. Children with Down syndrome may not walk until the age 4, but in some of the cases they walk at the age 2 (Peter …show more content…
This is extra genetic material and it is responsible for the developing abnormalities that occur. We have one extra chromosome which is chromosome 21 instead of 46 chromosomes and two sex chromosomes. This phenomenon is called nondisjunction. It happens when a pair of chromosomes fails to separate during egg (or sperm) formation and creates an extra chromosome 21. The extra chromosome is then copied in every cell as the baby develops. Interestingly, these nondisjunction events seem to occur more frequently in older women and thus women who are at the age of 35 or older, chances of happening this are greater
They have relatively younger mind compared to others as adults have mental level of nearly similar to 8 to 9 year old. They have eyes having an upward slant, slanted fissure, epicanthic skin folds on the inner corner, and white spots on the iris. Eyes don’t look like normal people. People with Down syndrome have relatively low or poor muscle tone. They have flat nasal bridge. They have single crease over palm. They have protruding tongue due to small mouth and large tongue. Growth in their height is slower which results in adults who tend to have short physique. They have increased risk of obesity. They have relatively short neck. Their face is relatively flat and wide. Children with Down syndrome often have a speech delay and require speech therapy to assist with expressive language. Children with Down syndrome may not walk until the age 4, but in some of the cases they walk at the age 2 (Peter …show more content…
This is extra genetic material and it is responsible for the developing abnormalities that occur. We have one extra chromosome which is chromosome 21 instead of 46 chromosomes and two sex chromosomes. This phenomenon is called nondisjunction. It happens when a pair of chromosomes fails to separate during egg (or sperm) formation and creates an extra chromosome 21. The extra chromosome is then copied in every cell as the baby develops. Interestingly, these nondisjunction events seem to occur more frequently in older women and thus women who are at the age of 35 or older, chances of happening this are greater