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Alexxandr [17]
3 years ago
10

Jason was born with ________________. the doctor tells his parents that this genetic disorder occurred because he has an extra c

opy of chromosome 21.
Biology
1 answer:
leva [86]3 years ago
6 0

The answer would be Down syndrome.


Down syndrome is a disease that caused by trisomy(three chromosomes) of chromosome 21. The number of chromosome in normal condition is two so an extra copy makes the chromosome count become three. The patient will show a sign of men tal retar dation with a few typical characteristic in their faces(facies).

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Answer:

The correct answer is -

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Explanation:

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Explanation:

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Answer:

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Explanation:

Hope this helps

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