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Down Syndrome: Genetic Disorder Or Disease
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Recommended: Abstract paper on effects of down syndrome
Brittany Spence Down Syndrome Down Syndrome is a genetic disorder or disease, that occurs during chromosome division, in early human life. When a persons 46 chromosomes abnormally divides crating 47 chromosomes all together. Thus creating a full or partial 3rd copy of the chromosome 21. There are three types of down syndrome, trisomy 21 which is about 95% of cases, translocation accounts for 4% of cases and mosaicism accounts for about 1% of down syndrome cases. Down syndrome is a disease in which a person presents many physical symptoms which are very easy to notice at a first glance. The symptoms of down syndrome are flat facial physiognomy, small head, short neck, protruding tongue, antrorse slanting eyes that is abnormal for the child's
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597 Words | 2 PagesDown 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.
Causes and Effects of Down Syndrome
1107 Words | 3 PagesDown Syndrome results when one of the three types of abnormal cell divisions involving chromosome 21 occur. Roger W. Harms, a medical doctor, states, “Human cells normally contain twenty-three pairs of chromosomes. One pair comes from your father and one pair comes from your mother.” In each pair, one chromosome comes from the father, and one comes from the mother. One of the three genetic variations that can cause Down Syndrome is Trisomy 21. This version of Down Syndrome occurs more than 90% of the time. It re...
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822 Words | 2 PagesMost cases of Down syndrome are not inherited. When the condition is caused by trisomy 21, the chromosomal abnormality occurs as a random event during the formation of reproductive cells in a parent. The abnormality usually occurs in egg cells, but it occasionally occurs in sperm cells. An error in cell division called nondisjunction results in a reproductive cell with an abnormal number of chromosomes. For example, an egg or sperm cell may gain an extra copy of chromosome 21. If one of these atypical reproductive cells contributes to the genetic makeup of a child, the child will have an extra chromosome 21 in each of the body's cells.
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852 Words | 2 PagesDown syndrome is a very common disorder now a day’s, but not many know what it actually is. Down syndrome was a topic that was not as common back in that day. “John Langdon Down, an English physician, published an accurate description of a person with Down syndrome. It was this scholarly
The Effects of Down Syndrome
1043 Words | 3 PagesIt is well known that children have Down syndrome within physical features. They are not different than a person who does not have Down syndrome, but their physical features are quite different such as, facial appearance in the face, which is flatter. They also have a slant within their eyes, smaller ears and protruding tongue which is slightly bigger and suspends out a part from the mouth. (2)
Down Syndrome
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Understanding Down Syndrome
2950 Words | 6 PagesDown syndrome, also known as “trisomy 21” is a genetic condition in which a child is born with an extra chromosone which causes certain features and delays in development. In sexual reproduction (meiosis) the new cell will have half of the mothers chromosones 23 and half of the fathers chromosones 23 to make a total of 46 (23 pairs) in the new cell (zygote). In a child with Down Syndrome, they will have an extra chromosone 21 making a total of 47 chromosones. There is no specific reason why this extra chromosone is present, but the older the mother is when giving birth, the more likely that her baby will have Down syndrome. Down Sydrome is named after John Langdon Down, the first person to describe the condition in 1866.
Essay On Down Syndrome
2529 Words | 6 PagesIt is a well known fact that all living things, humans included, are made up of cells. The nucleus of a typical cell in the human body is made up of 23 pairs of chromosomes. Half of the pairs come from each parent. In some individuals there is a full or partial extra copy of chromosome 21 present; these individuals have Down Syndrome (National Down Syndrome Society). Down Syndrome is a genetic disorder that most people know very little about. Since Down Syndrome is something that very few people know much about, this paper will include a lot of information about the disorder that is not well known to the general public. In this paper I will discuss what exactly Down Syndrome is and provide background information and history, describe how and when the disorder is diagnosed, provide insight of what life is like for a person with Down Syndrome and I will do my best to clear up many misconceptions that people often have about individuals with Down Syndrome.
Downs Syndrome
2701 Words | 6 PagesDown's Syndrome Down's syndrome is a genetic condition involving an extra chromosome, this change occurs around the time of conception. A person with Down syndrome has forty-seven chromosomes instead of the usual forty-six. A relatively common genetic disorder, Down's strikes 1 out of 600 babies. In 95 percent of all cases, the disorder originates with the egg, not the sperm, and the only known risk factor is advanced maternal age-at age 35, a woman has 1 chance in 117 of having a baby with Down's; at 40, her odds are 1 in 34. Graves, 1990.
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Characteristics of Down's Syndrome
750 Words | 2 PagesIt is caused by an extra 21st chromosome. This is also known as trisomy 21. Instead of 46 chromosomes in each cell it was determined that an extra 21st chromosome affected Down syndrome, this occurs 95% of the time. There are three copies of this chromosome. It is causes by a cell error called non-disjunction. Two other types are mosaicism and translocation. Non-disjunction causes faulty cell division and produces three copies of the 21st chromosome instead of two. Either the sperm or the egg don't separate during division causing the extra chromosome to replicate in every cell. As stated above it is responsible for 95% of Downs.
Down Syndrome Research Paper
613 Words | 2 PagesThe cause of this disorder is because of an extra chromosome in the body. About 90% of Down Syndrome cases are caused by this extra chromosome, chromosome 21 (this is why it is also called Trisomy 21). An extra chromosome originates in either the sperm or the egg. When the egg and the sperm unite to form the fertilized egg, two instead of three chromosomes in chromosome 21 are present. As the cells divide the extra chromosome is repeated in every cell.
Thesis Statement For Down Syndrome
505 Words | 2 Pages(S Aivazidis., 2017) • Down syndrome is also associated with other diseases such as: leukemia, seizures, vision problems, diabetes, dementia and Alzheimer's disease. (S Aivazidis., 2017) 3. Down Syndrome and the development Myeloid leukemia has been diagnosed mostly in infants and children. Myeloid Leukemia is a type of cancer of the blood. Myeloid leukemia has a low number of leukemic blast in the bone marrow, and mutations in GATA1 gene.
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