Name the mechanism of evolution that must have operated so that population-two evolved from population-one.
| List-I | List-II |
| (A) Thalassemia | (I) 47, XXY |
| (B) Klinefelter’s syndrome | (II) Sex-linked recessive disorder |
| (C) Turner’s syndrome | (III) 45, XO |
| (D) Colour blindness | (IV) Autosomal recessive disease |
