Biology, asked by bhedashraddhaa1256, 9 months ago

Down's syndrome is caused by an extra-copy of chromosome number 21What percentage of afected offspring is produced by an affected mother and a hornal father? (1)100% (2)75% (3)50% (4)25%

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Answered by sowsriakansha12345

1

Answer:

2 is the correct option and answer....

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