The Earliest Depictions Of A Person With Down Syndrome

Down Syndrome, also known as trisomy 21, is a genetic disorder in which a baby is born with an extra chromosome. A baby is usually identified at birth through observation of a set of common physical characteristics. They include having slanted eyes, a pushed in face, and “Brushfield spots” [white/gray spots that appear in the iris of people with down syndrome]. In the 1930’s down syndrome was not treated very well, however many changes in the medical field has led to a better treatment of those who have this illness.

Down syndrome occurs by nondisjunction. Nondisjunction is the failure of a pair of chromosomes to separate during egg, or sperm, formation. The embryo ends up with three copies of chromosome 21 when the defective chromosome’s egg joins with a normal sperm

Answer: The most common form of Down syndrome is known as Trisomy 21, a condition where individuals have 47 chromosomes in each cell instead of 46. This is caused by an error in cell division called nondisjunction, which leaves a sperm or egg cell with an extra copy of chromosome 21 before or at conception. To the genes when the cell division occurs is when the extra chromosome goes to find a cell and attaches

Also known as Trisomy 21, Down Syndrome is an illness due to which an superfluous genetic structure leads to delays in the manner in which a child’s mental and physical faculties develop.

The genetic disorder of Trisomy 21, or Down syndrome is one that has often interested me. I understand that many children born with his genetic disorder can in fact live a full life, often with assistance. When answering the question of what exactly Down syndrome is, a good definition can be one describing this disorder as a genetic condition where a person has an extra 21st chromosome. The typical person has 46 chromosomes, therefore the person born with Down syndrome has 47. This extra chromosome brings with it some physical and cognitive characteristics that include mild to severe cognitive delay, low muscle tone, stunted growth, an easily identifiable upward slant to the eyes, generally a deep crease across the center of the palm and the appearance of a flat face. We have to keep in mind however, that each person with Down syndrome is an individual and might have some of these characteristics to different degrees, or possibly none at all.

Down syndrome is a genetic disorder and the most common autosomal chromosome abnormality in humans. Down syndrome occurs when an individual has a full or partial extra copy of chromosome 21. This additional genetic material alters of development and causes the characteristics associated with Down syndrome. The primary purposes of this article are to: establish the origin of the term Down syndrome; determine the possible causes of Down syndrome; Likelihood of having a child with Down syndrome; and treatments for humans diagnosed with Down syndrome.

Down syndrome takes its name from Dr. Langdon Down. He was the first person to describe the syndrome in 1866. The earliest recorded incident of someone having Down syndrome dates back to an altar piece painted in a church in Aachen, Germany in 1504. Although the syndrome is named after Dr Langdon Down, he did not understand the condition, as we know it today. The syndrome was referred to as having mongolism. This was because people who have Down syndrome have similar physical characteristics to those people of oriental heritage.

In every cell in the body there is a nucleus and this is the location where genetic material lives. These genes are responsible for carrying the inherited traits that we get from our parents, in the form of chromosomes. Normally each cell contains a nucleus with a pair of 23 chromosomes, half of which come from mom and the other half coming from dad. The genotype in the example given is that of a person with Down syndrome. Down syndrome is a chromosomal disorder that results in learning disabilities and physical abnormalities. Most cases of Down syndrome are caused by an extra copy of chromosome 21. An extra chromosome, making 3 of one kind, is called a trisomy and the most common is trisomy 21. This may be a chromosome given to the child from the father but a portion of mothers can also pass the chromosome to the child, mothers that get pregnant over 35 years of age have been shown to pass on the chromosome. Physical appearance will lead a doctor to suspect a patient with Down syndrome but a blood test is needed to determine if the patient has the extra chromosome. Down syndrome can affect many parts of the body, there are

Down syndrome is a congential disorder arising from a chromosome defect, causing intellectual impairment and physical abnormalities including short stature and a broad facial profile. It arises from a defect involving chromosome 21, usually an extra copy ( trisomy - 21 ). In every cell in the human body there is a nucleus, where is genetic stored in genes. Genes carry the codes responsible for all of our inherited traits and are grouped rod-like structures called chromosomes. This additional genetic material alters the course of development and causes the characteristics associated with down syndrome. Many people misunderstand down syndrome as much as they misunderstand the people affected by the disorder even though not knowing the real causes,types, symptoms and anything that has to do with down syndrome.The most common form of down syndrome is known as trisomy 21, a condition where individuals have 47 chromosomes in each cell instead of 46. Trisomy 21 accounts for 95% of down syndrome cases, with 88% originating from nondisjunction of the mother’s egg cell and the remaining 5% of down syndrome cases are due to conditions called mosaicism and translocation which those are the three types of down

The chromosome affected by Down syndrome is chromosome 21. Chromosome 21 is twenty first pair of chromosomes in which are a part of the twenty three pairs of chromosomes found in human beings. People normally have two copies of this chromosome. The trisomy of the twenty first chromosome causes Down Syndrome. The chromosome is defected because instead of two

There are three forms of Down Syndrome. These three are Trisomy 21, Mosaicism, and Translocation. Trisomy 21 is where there is an extra copy of Chromosome 21 in every cell. Mosaicism is where only some of the child’s cells have an extra copy of Chromosome 21. Translocation is where only one of the 46 total chromosomes has an extra Chromosome 21 where part of Chromosome 21 gets attacked to another chromosome during the formation eggs and sperm, or early in the development of the fetus. Mosaicism and Translocation usually have less symptoms that Trisomy 21. Only translocation Down Syndrome can be inherited by an unaffected parent. Trisomy 21 is because of an abnormality in the reproductive cells, and mosaic Down Syndrome is just a random event that occurs early in fetal development. A baby receives 23 chromosomes from each parent, but with a Down Syndrome child, they receive extra chromosomes. When the Chromosome 21 is supposed to split into two chromosomes, the chromosome does not separate properly and they get three Chromosome 21. So as the brain and physical features develop, problems occur. Down Syndrome affects 1 in 800 newborns. Each year in the United States, 5,300 babies with Down Syndrome are born, and 250,000 people have this condition in

Down Syndrome is a developmental disorder caused by an error in the process of cell division. This disorder is characterized by an extra copy of chromosome 21 (trisomy)(Segal & Pesco, 2015). It is the most common chromosomal disorder and affects 1 in 700 live births (Ramia, Musharrafieh, Khaddage, & Sabri, 2014). According to Segal and Pesco (2015), Down Syndrome is characterised by physical features such as distinct facial characteristics, low muscle tone; conditions such as congenital heart disease; and Intellectual Disability with IQs typically ranging from 30 to 70.

Down syndrome is a chromosomal disease caused by an abnormality dealing with the 21st chromosome. Down syndrome is unique to each individual, and three different kinds can occur. The three different types include Trisomy 21, Translocation, and Mosaic Down syndrome. Not only do these differ, but they all affect the body in different ways. Down syndrome affects appearance, mental cognition, and one’s ability to speak and learn.

Chromosomes are like computers, ‘carrying genetic information in the form of genes’. These chromosomes determine your hair color, eye color, skin color, etc. Every human contains 42 chromosomes, only two of them determine the gender of the person. During the reproductive system however, the mother gives 23 chromosomes and the father gives 23 chromosomes as well. Sometimes during the reproduction system, one parent gives 24 chromosomes which will affect the child later in his or her life after birth.

Down syndrome is a common disorder where the child gets an extra copy of the 21st chromosome. It happens in every 691 babies born in the United States. This adds up to about 6,000 babies born with the disorder a year. The major points in this paper are: when the disorder was discovered, the symptoms, the lifespan, the medical treatments, if it is a dominant trait, what chromosome is affected, and how it is passed down to offspring.