Down+Syndrome+(Sick+Genes+Project)

Pedro Munoz P.6 = __//**Down Syndrome (Sick Genes) **//__ =

Down Syndrone is the genetic mutation in which a person has 1 extra copy of chromosome 21; also called Trisomy 21. This mutation is caused during the process of meiosis. In meiosis during the anaphase, the chromosomes within the cell begin to seperate to go into two knew cells. But during the breakage of the chromosomes, there is a problem causing uneven amounts of chromosome go in opposite directions; also known as nondisjunction. Nondisjunction would cause the person with the mutation have 47 chromosomes instead of 46 causing problems in the humans body development. Symptoms of Down Syndrone are very apparent and may be severe. Some of these symptoms are:


 * Abnormal shaped heads
 * Flattened facial features such as: flattened nose, small ears, & small mouth
 * Sutures
 * Upward slanting eyes
 * Small fingers and hands
 * Brushfield spots
 * Separated joints in skull area

Not only physical features are affected, but the development of the brain is affected as well causing retardation, short attention spans, & impulsive behavior. There are also many medical conditions that people with Down Syndrome such as heart and eye problems.

It is apperent to tell whether a baby is born and has Down syndrome just by its appearence but there may be other ways to determine it such as blood tests, X-rays, and whether or not they have heart murmurs. People with Down syndrome should have specifications on when to go to the check on their eye, heart, dental, and thyroid problems. Even with all of this there is no specific way to treat the mutation but just keep the people in a safe environment to prevent any other problems such as obesity.

The prognosis of people with Down Syndrome is quite well able to be living into adulthood without any complications. But even though their survivability is well, they are prone to some diseases such as leukimea and heart defects.

To learn more about Down Syndrome go to: [] and watch the videos!

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