Trisomy 21

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When someone has three chromosomes in chromosome 21, it means you have Down syndrome. I know that the gene mutation in the picture is Down syndrome because when you have three chromosomes present, people tend to use the term "trisomy," which is also known as Down syndrome. Down syndrome a genetic disorder that affects not only the child or person with it, but also everyone else. Down syndrome is a mental and physical genetic disorder that is very rough on someone.

Down syndrome is a disorder that comes with some defects, such as in the face, heart, sight, and hearing, and other health related problems. It also is the most common genetic defect, affecting many babies. Down syndrome is caused when the chromosomes are being divided during meiosis the cell keeps both copies of chromosome #21, which means the person with Down syndrome has an extra copy in every cell in their body. This is a sad genetic disorder that can change a person's life. Even though it is a devastating gene mutation, the people with Down syndrome are some of the most loving of all people.

People who are born wit...

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