Question

Which of the following disorders is caused by an error in the process of meiosis? A....

Which of the following disorders is caused by an error in the process of meiosis?

A. Marfan syndrome
B. Lissencephaly
C. Down Syndrome
D. Turners Syndrome
E. C and D

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Answer #1

error during meiosis cycle can have genetic mutations, defective gametes can lead to genetic disorders.

the correct choice would be E : C and D

Turner's syndrome:

  • non-disjunction of human sex cells
  • extra or missing chromosome (female missing the X chromosome)
  • occurs to females
  • short height, poor body development
  • heart defects

Down's syndrome:

  • Non-disjunction of human autosomes
  • failed seperation of the non-sex chromosomes
  • the individual will carry the third chromosome (Trisomy 21)
  • delayed development
  • distant facial appearance
  • intellectual disability
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