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down’s syndrome is due to non-disjunction of chromosome duplication crossing over linkkage

down’s syndrome is due to
  1. non-disjunction of chromosome
  2. duplication 
  3. crossing over
  4. linkkage

Grade:12th pass

1 Answers

Gaurav
askIITians Faculty 164 Points
6 years ago
Hello Student
Correct Answer is 1. non-disjunction of chromosome
Down’s Su\yndrome is due to the non-disjunction of 21stchromosome. The individual contains 47 chromosome in the syndrome. It is also known as Trisomy 21

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