| Every year, one child in every 800 to
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| | population of people with the disorder.
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| 1,000 births will be born with a
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| | Translocation occurs when part of
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| condition known as Down syndrome. Down
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| | chromosome 21 breaks off and attaches to
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| syndrome is a disorder in which the child
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| | another chromosome, changing the genetic
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| has extra genetic material. This extra
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| | makeup. In this form of Down syndrome,
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| genetic material causes the baby to
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| | each cell has the normal 46 chromosomes,
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| develop differently in the womb. This
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| | but there is extra genetic material from
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| abnormal development occurs during the
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| | the broken off chromosome.The third and
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| early stages of cell division, soon after
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| | final form is called Mosaicism, and is
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| conception.There is no known reason for
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| | the rarest form of Down syndrome,
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| Down syndrome or a cure for it.The
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| | occurring in only 2% of all cases.
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| disorder came by its name when an English
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| | Mosaicism happens when some of the cells
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| physician, John Langdon Down, published a
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| | in the forming embryo have 46
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| description of the characteristics of a
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| | chromosomes, and some have 47. Thus, the
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| person with the condition in 1886. Since
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| | alternating pattern gives it the name
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| Dr. Down was the first person to give the
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| | Mosaicism.People with Mosaicism may not
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| syndrome a name, the disorder is known as
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| | be as affected with the physical and/or
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| Down syndrome.The Common Forms of
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| | developmentally delayed characteristics
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| DownsThere are three distinct forms of
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| | of those born with the other two forms of
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| Down syndrome. The most common form is
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| | Down syndrome.Common Physical
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| Trisomy 21. This is when a child has an
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| | TraitsBabies with Down syndrome are
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| extra chromosome 21.Instead of having 46
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| | usually diagnosed at birth or shortly
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| chromosomes in each cell (23 from the
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| | thereafter. Because Down syndrome affects
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| father and 23 from the mother), he has
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| | a child physically, there will be certain
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| 47. Ninety-five percent of children born
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| | features that an alert doctor or nurse
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| with Down syndrome have Trisomy
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| | will pick up on. Most children with the
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| 21.Translocation is another form of Down
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| | syndrome will have some or all of these
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| syndrome and makes up 3 to 4% of the
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| | traits.
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