| List-I | List-II |
|---|---|
| Scientists | Discoveries |
| (A) Walter Sutton and Boveri | (I) Linkage and recombination of genes on a chromosome |
| (B) Gregor Mendel | (II) Chromosomal theory of inheritance |
| (C) Thomas Hunt Morgan | (III) Law of inheritance |
| (D) Alfred Sturtevant | (IV) Genetic map |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A) - (II), (B) - (III), (C) - (I), (D) - (IV)
(A) Walter Sutton and Boveri — this matches (II) Chromosomal theory of inheritance. They saw that chromosomes and Mendel’s factors behave alike at meiosis: both occur in pairs and segregate. So they proposed that the factors (genes) lie on chromosomes.
(B) Gregor Mendel — this matches (III) Law of inheritance. From his crosses on the pea plant he gave the laws of dominance, segregation and independent assortment.
(C) Thomas Hunt Morgan — this matches (I) Linkage and recombination of genes on a chromosome. Working on Drosophila, he coined the terms linkage and recombination for genes on the same chromosome.
(D) Alfred Sturtevant — this matches (IV) Genetic map. He used the frequency of recombination between gene pairs to measure their distance and map their positions on the chromosome.