Part A Tnsomy 21, or Down syndrome, occurs when there is anormal dplo.pdf

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Part A Tnsomy 21, or Down syndrome, occurs when there is anormal dploid deomosomal complement but one 21 Ahough ave higher (19 vrvna offspring would be expected to have Down syndrome rboen parents have 0own syndrome? Given the that wen 48 chromosomes nou chromosome 21) ly to survive oaydevekpront peroenlage ar O An the chadren would be expected to have Down syndrome o None of surviving offsprang wous be expected to rave Down sydome o one othe survivrg omsprng would be expected trav Downsyndrome O Two minds of surviving preg wouldbe easected to have Down syndrome One hall the survning onspring would be expected lo have Down syndoome Incorrect: Try Again: 2 attempts remaining a O Ask me anything Solution one third of the surviving offspring will have Downs Syndrome Since its inheritance is autosomal, so all children will not have Downzs syndrome. One which will inherit both the copies of trisomy from both parents will have the syndrome.

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Down syndrome is one of the known genetic disorders, in which an individual has an extra full or partial copy of chromosome 21. Human beings have 23 pairs of chromosomes combinely received from biological father and mother. This abnormal cell division, down syndrome, causes many issues relating to the intellectual ability, physical features, learning ability and developmental delays in an affected child.

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