Q155 / 180 · JIPMER 2018 · Zoology

Non-disjunction in meiosis results in

  • Correct answer
    A
    trisomy
  • B
    normal diploid
  • C
    gene mutation
  • D
    None of these

Solution

Non-disjunction in meiosis results in trisomy, i.e. the presence of an extra chromosome. Such individuals have 47 chromosomes instead of 46 . Some examples of such abnormalities include Down's syndrome (21-trisomy), Patau's syndrome (13-trisomy) and Edward's syndrome (18-trisomy).

Hence, the correct answer is option: 'A'.

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