what is down syndrome
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Down syndrome is a lifelong condition in which a person is born with distinct physical features and some degree of cognitive disability.
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what Is down syndrome
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it's a disorder arising due to chromosomal abnormality .This is the first discovered and described chromosomal disorder is n human beings.
This disorder is characterised by the presence of 47 chromosomes .It is described as trisomy of the 21st chromosome .Infants with this disorder have one extra chromosome with 21st pair in every cell of their body.Therefore they have 47 chromosomes instead of 46.children suffering from this disease r generally mentally retarded and have a short life span.Mental retardation is the most prominent characteristic .Other symptoms include short height ,scanty hairs,short wide neck ,flat nose,short fingers ,single horizontal crease on the palm ,and a life expectancy of about 16-20years.
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This disorder is characterised by the presence of 47 chromosomes .It is described as trisomy of the 21st chromosome .Infants with this disorder have one extra chromosome with 21st pair in every cell of their body.Therefore they have 47 chromosomes instead of 46.children suffering from this disease r generally mentally retarded and have a short life span.Mental retardation is the most prominent characteristic .Other symptoms include short height ,scanty hairs,short wide neck ,flat nose,short fingers ,single horizontal crease on the palm ,and a life expectancy of about 16-20years.
I hope that it will help u.....
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