Match List-I with List-II regarding genetic disorders and the chromosome involved.

Column I

  • A. Down's syndrome
  • B. $\alpha$-Thalassemia
  • C. $\beta$-Thalassemia
  • D. Klinefelter's

Column II

  • I. 11th chromosome
  • II. 'X' chromosome
  • III. 21st chromosome
  • IV. 16th chromosome