Characteristics Of Down Syndrome

In every cell in of the human body there is a nucleus, and that’s where genetic material are stored in the genes. Genes carry the codes responsible for all of our inherited traits and that are grouped along rod-like structures called chromosomes. Typically, the nucleus of each cell contains 23 pairs of the chromosomes, half of which are inherited from each of the parent. Down syndrome occurs when an individual has a full or partial extra copy of chromosome 21.

This is the additional genetic material alters of the course of development and causes the characteristics that are associated with Down syndrome. A few of common physical traits of the Down syndrome disorders are low muscle tone, small stature, an upward slant to the eyes, and a single deep crease across the center of the palm of your hand. Although each person that is diagnose with Down syndrome may have possess these characteristics to the different degrees.

One in every 691 babies in the United States is born with Down syndrome. Which is marking Down syndrome the most common genetic condition of most disorder. Approximately 400,000 Americans have Down syndrome and about 6,000 babies with Down syndrome are born in the United States each year. Delayed development and behavioral problems are often reported in children with Down syndrome. Affected individuals' speech and language develop later and more slowly than in children without Down syndrome, and affected individuals' speech may be more difficult to understand. Behavioral issues can include attention problems, obsessive compulsive behavior, or stubbornness or tantrums. A small percentage of people that have Down syndrome are diagnosed with developmental conditions called autism spectrum disorders. They are which affec...

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...person in the family has the condition. Some disorders that affect multiple family members are caused by gene mutations, which can be inherited (passed down from parent to child). Other conditions that appear to run in families are not caused by mutations in single genes. Instead, environmental factors such as dietary habits or a combination of genetic and environmental factors are responsible for these disorders.

It is not always easy to determine whether a condition in a family is inherited. A genetics professional can use a person’s family history (a record of health information about a person’s immediate and extended family) to help determine whether a disorder has a genetic component. He or she will ask about the health of people from several generations of the family, usually first-, second-, and third-degree relatives.firmed by chromosome studies (karyotype).