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Down syndrome is something that human can be born with (you don't catch it). Its caused by having 1 extra chromosome (trisomy 21) , resulting from a genetic mutation. It is characterized by specific facial features and below average cognitive abilities. It's developed before birth, it cannot be treated or prevented. For woman after 40 can be considered a bit risky and is possible to increase the chances down syndrome. An amniocentesis can be done to determine if an unborn child has this syndrome, but as there is no cure it is merely a way for parents to be prepared.
The meaning of Down syndrome is understood as the continuation of some defect from parents to lower generations. The word 'Down is actually the name John Langdon Down who described the condition in 1887 however extra genetic material causing delay in the way of child 's growth was discovered later. Syndrome is from the recognizable clinical symptoms. The Down syndrome has unpredictable behavior with different families. A teacher with very week eye sight has 3 sons and 3 daughters with perfect eye sight. Elder son has 3 children with week eye sight but his brother has a son with perfect eye sight though wives of both are real sisters out of the family. Third son has 3 sons with perfect eye sight. The affect of the children of daughter is reverse; two daughters having children with week eye sight and third having children having no eye sight problem.
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∙ 13y ago
Wiki User
∙ 15y agoDown syndrome, Down's syndrome, or trisomy 21 is a chromosomal disorder caused by the presence of all or part of an extra 21st chromosome. It is named after John Langdon Down, the British Doctor Who described the syndrome in 1866. The disorder was identified as a chromosome 21 trisomy by Jérôme Lejeune in 1959. The condition is characterized by a combination of major and minor differences in structure. Often Down syndrome is associated with some impairment of cognitive ability and physical growth as well as facial appearance. Down syndrome in a baby can be identified with amniocentesis during pregnancy or at birth.
Wiki User
∙ 12y agoPeople have down syndrome because they have a chromosome 21 meaning that they have three 21 chromosomes leaving them with a total of 47 instead of 46.
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∙ 8y agoWhat do human egg cells have in common with human sperm cells
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Are children of Down Syndrome parents normal?
That would mean that the mother is the one with Down syndrome, since men with Down syndrome are sterile. There is a 50% chance that the child will have Down syndrome and 50% chance that child will be born without.
Does duodenal atresia always mean Down syndrome?
No, there is a 30-40% chance of Down Syndrome when duodenal atresia is diagnosed.
What does it mean to dream with a person with down syndrome?
Nothing.
What is the genetic disorder for having three 21 chromosomes?
down syndrome
How care for down syndrome children by family?
when you know what is a Down syndrome, try to be a pacient and full of love person, and the rest is easy, but..... is necessary to know, the Down syndrome is not a dissease is a fact, and it's mean a permanent devotion and work, is not a joke!
If your newborn baby has only slightly slanted eyes -but is very active - could she have Down syndrome?
Just because a newborn baby has slightly slanted eyes does not mean that they have down syndrome. Doctors are able to diagnose down syndrome at birth.
What is a chromosomal disorder that could result from nondisjunction?
Disorders, such as Down's Syndrome, are caused by nondisjunction.
What condition results when a child is born with an extra chromosome on the third pair?
Down syndrome
What is the correct spelling 'Down syndrome' or 'Down's syndrome'?
Down syndrome is generally the preferred spelling, although Down's syndrome is sometimes used in American sources.
Is down's syndrome inherited?
Most cases of down syndrome are not inherited. Translocation Down syndrome can be inherited.
Where is down syndrome on your body?
Down Syndrome Is In Your Brain.
What are diagnosis for down syndrome?
Down syndrome IS the diagnosis.
