By: Jared Jones Period 1
Down's Syndrome is a chromosomal disorder cause by an error in DNA replication before birth. The error results in an extra copy of genetic material in all or the the 21st pair of chromosomes. The offspring is born with physical and intellectual disabilities. Trisomy 21 is the most prominent type of Down's Syndrome and accounts for 85% of cases of Down's Syndrome. It occurs because one the sperm or egg cell has an extra copy of the 21st chromosome before fertilization, leaving 47 chromosomes in each cell of the baby. Similarly, Mosaic Down's takes place when only some cells have Trisomy 21.
Causes of Down's Syndrome
Down's Syndrome is caused by an error in cell division due to age. Age is the only known factor that contributes to having an offspring born with this deformity. Doctors believe women over 35 are at a higher risk of giving birth to a baby with Down's Syndrome or. Women over this age are also have a higher risk of giving birth to a baby with disorder. This can be prevented by conducting a series of tests to determine the probability of having a baby with Down's Syndrome.
Symptoms and Effects of Down's Syndrome
There are many long-term ramifications from having a case of Down' Syndrome. Patients with Down's Syndrome suffer from physical disabilities. The disabilities range from growth to difficulties with speech. They are also victim to severe mental impairments. The have a limited attention span and learn at a slower pace than average people. Fortunately, there are specialists to assist Down's Syndrome patients with their certain condition. For instance, a person with speech complications can meet with a specialist to help he/she improve with their speech.