Many people believe, from common knowledge, that having a Down syndrome cannot be prevented and that it is genetic. This was proved w...
“National Down syndrome society (NPSS) states that 1 in 700 babies in the United States are born with Down syndrome” (Health Line).The causes Down syndrome come from the parents; they carry their genes on to the child. “The genes are considered chromosomes, when the baby cell
Children born to older parents are at greater risk for genetic abnormalities, such as Down syndrome. No one knows what causes the chromosomal abnormality that results in Down syndrome, a condition according to the National Association for Down syndrome, affects one in 800 to 1,000 babies in the United States. Any woman regardless of her culture, race and socio-economic status can have a baby with Down syndrome. However, a mother’ age seems to be a unifying factor among children with Down syndrome. Older women have a greater chance of giving birth to a baby with Down syndrome, and the risks increases with every passing year. The National Association for Down syndrome estimates the chance of having a baby with Down syndrome to be as follows:
Down syndrome is a genetic disease where there is an extra chromosome on the 21st chromosome. Now there are three types of Down syndrome Trisomy 21, Mosaic Down syndrome, and Translocation Down syndrome. First we’ll talk about Trisomy 21. According to Mayo Clinic Staff (2011) “More than 90 percent of the time, Down syndrome is caused by trisomy 21. A child with trisomy 21 has three copies of chromosome 21 — instead of the usual two copies — in all of his or her cells.”(Para.3) so from this we can conclude that this is the most common type of Down syndrome. Next there is Mosaic Down syndrome according to the Mayo Clinic Staff (2011) “In this rare form of Down syndrome, children have some cells with an extra copy of chromosome 21. This mosaic of normal and abnormal cells is caused by abnormal cell division after fertilization.” (Para.4) we can conclude from this that this is a rare type of Down syndrome and is a mixture of normal cells and the cells that have more than two chromosomes so it’s like a mosaic because the cells are mixed. Lastly there is Translocation Down syndrome. According to Mayo Clinic Staff (2011) “Down syndrome can also occur when part of chromosome 21 becomes attached (translocated) onto another chromosome, before or at conception. Children with translocation Down syndrome have the usual two copies of chromosome 21, but they also have additional material from chromosome 21 attached to the translocated chromosome. This form of Down syndrome is uncommon.”(Para.5). this paragraph shows that the child has two copies of chromosome 21, but some on one of the copies some extra material sticks on. According to the Mayo Clinic Staff (2011)”Translocation Down syndrome is the only form of the disorder that can be passed fr...
Down 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
People with translocation Down syndrome can inherit the condition from an unaffected parent. The parent carries a rearrangement of genetic material between chromosome 21 and another chromosome. This rearrangement is called a balanced translocation. No genetic material is gained or lost in a balanced translocation, so these chromosomal changes usually do not cause any health probl...
Down syndrome is one of the most common chromomal defects. It occurs in about 1 out of 800 births. The probability of having a child with Down syndrome increases with the mother’s age. The rate for women in their twenties is about 1 in 2000 births. This number increases dramatically for a women in her forties to about 1 in 100. The cause of Down syndrome is an extra chromosome. In 95 percent of the cases, the child has three instead of two chromosomes on the 21 chromosome. There is a test called amniocentesis that can tell the mother if her child will have Down syndrome. Amniocentesis involves inserting a needle into the amniotic sac to withdraw a small about of the amniotic fluid. The cells in the fluid are then analyzed to see if the child has Down syndrome. There is small risk of a miscarriage or infection to the uteru...
Down syndrome is common within the United States. According to Gould and Dyer (2011), Down syndrome is an example of trisomy due to there are three chromosomes that are present versus two in the 21 position. Meaning, people with Down syndrome have a total of 47 chromosomes instead of the original 46. The body is marked by the effects of Trisomy 21. The effects of Trisomy 21 can lead to defects of physical and mental development. Down syndrome was at first also called monogolism, but now it is more commonly known as Down syndrome. The risk of giving birth to a child with Down syndrome increases with maternal age. A woman at age 30 has a risk of approximately 1 in 1000 in bearing a child who has Down syndrome, a woman at age 35 has a risk of 1 in 500, and at age 40 there is a risk of 1 in 100 (Gould & Dyer, 2011). It is unknown if this is due to the cause by the damage of the oocytes resulting of degenerative factors with aging or environmental substances. Some cases it was to be due to paternal origin also. This disorder can be detected by a positive triple screen test on maternal blood followed by an amniocentesis (Gould &Dyer, 2011).
An individual who has Down syndrome can be recognized as different from others since he or she have different physical features, but the question is, what causes individuals to have deformed face, little different features than someone who does not have Down syndrome? The reason some individuals are born with Down syndrome is because of an extra chromosome, this chromosome, which carries number 21. It is also known as Trisomy 21. Having this sort of disability, does not truly affect their life in a way they are not able to live, but it affects their cognitive levels, their physical growth of the child with Down syndrome. As the mother goes for an ultra sound, doctors can detect that the child within the mother’s womb has Down syndrome. (1) Mothers over age 35 have higher risk of giving birth to a child with Down syndrome, and 1 in every 1,000 women at the age of 30. In addition, in every 100 women, who age 40 there is a mother has a child with this case. As woman ages there is a higher chance of conceiving a child with Down syndrome than a woman who is in her mid-20s or younger. (2) This essay will highlight the effects and supports of Down syndrome in children.
Down syndrome is a birth defect caused by a genetic disorder that affects 350,000 people in the United States. It is caused by abnormalities in the genes and is not inherited, meaning that parents do not pass this onto their children. Genetics is the study of heredity or how certain traits are passed from parents to their children. Genes are the basic unit of heredity. Cells are the building blocks of your body and each one of us has more than 100 trillion cells. Our genes are located in chromosomes. Each cell in your body contains 46 chromosomes or 23 pairs. In a person with Down syndrome, there are 47 chromosomes. In 1956, a French researcher named Jerome Lejeune used a new powerful microscope to view human strands of DNA. DNA is what holds an individual person’s genes. He studied these DNA strands and determined that there is an extra strand in chromosome 21, which is now called “Trisomy 21” tri meaning three and somy for the word chromosome – meaning three chromosomes. No one knows exactly what causes Down syndrome aside from it being genetic.
Trisomy 21 is caused, as the name suggests, by the triplication of the 21st chromosome. Genes which, simplified, contain the blueprints for our cellular structure, are grouped along rod-like structures called chromosomes. Normally, the nucleus of each cell contains 23 pairs of chromosomes, half of which are inherited from each parent. In Down syndrome (DS), however, the cells usually contain not 46, but 47 chromosomes. This excess genetic material, in the form of additional genes along the 21st chromosome, results in DS. The estimated incidence of Down syndrome is between 1 in 1,000 to 1 in 1,100 live births. Each year approximately 3,000 to 5,000 children are born with this chromosome disorder. It is believed there are about 250,000 families in the United States who are affected by DS. (Berg, 614) Discussed in this paper will be a more detailed description of the pathophysiology of Down syndrome, as well as the discovery, possible causes, physical features, associated conditions, possible treatment, electroneurodiagnostic corollaries, and psychosocial issues.
It is believed that people with Down Syndrome has been around for a while. In 1959 Professor Jérome Lejeune proved that Down's syndrome is a chromosomal irregularity.Parents in that time were ashamed of their children with disabilities.In 1944 kids with disabilities did not have the right to have an education. Not until 1971 it was recognized that it should be legal for people with learning disabilities to get an education.Life expectancy for people with Down syndrome has heightened dramatically in modern decades from 25 in 1983 to 60 today. People with down syndrome have an increased risk for certain medical conditions such as heart disease,brain atrophy and learning disorders.(downs-syndrome association)
Chromosome silencing has led to a breakthrough in the world of Down syndrome, though it has proven to have multiple moral viewpoints that have come to be associated with it.