k 7yearold boy with Downs syndrome playing a game Downs syndrome. A seven year old boy with Downs syndrome, also known as trisomy 21, playing a game. Downs syndrome results from a chromosomal abnormality each body cell contains an extra chromosome number 21 so that there are 47 chromosomes rather than the usual 46. This results in a variable mental handicap IQ usually lies between 30 and 80 almost all affected children have learning potential, and distinctive appearance with upwardsloping eyes. Heart defects, congenital deafness and leukaemia are more common in people with Downs syndrome. About one in 650 babies shows this abnormality this rate increases with increased maternal age. Stock Photo - Afloimages
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7 year old boy with Down s syndrome playing a game Down s syndrome. A seven year old boy with Down s syndrome, also known as trisomy 21, playing a game. Down s syndrome results from a chromosomal abnormality each body cell contains an extra chromosome number 21 so that there are 47 chromosomes rather than the usual 46. This results in a variable mental handicap IQ usually lies between 30 and 80 almost all affected children have learning potential , and distinctive appearance with upward sloping eyes. Heart defects, congenital deafness and leukaemia are more common in people with Down s syndrome. About one in 650 babies shows this abnormality this rate increases with increased maternal age.
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7-year-old boy with Down's syndrome playing a game

Down's syndrome. A seven year old boy with Down's syndrome, also known as trisomy 21, playing a game. Down's syndrome results from a chromosomal abnormality; each body cell contains an extra chromosome (number 21) so that there are 47 chromosomes rather than the usual 46. This results in a variable mental handicap; IQ usually lies between 30 and 80 (almost all affected children have learning potential), and distinctive appearance with upward-sloping eyes. Heart defects, congenital deafness and leukaemia are more common in people with Down's syndrome. About one in 650 babies shows this abnormality & this rate increases with increased maternal age.

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