Question

The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by

• A. Sutton Boveri
• B. H. Morgan
• C. Gregor J. Mendel
• D. Alfred Sturtevant

Answer 1

The correct option is D

Alfred Sturtevant

The correct option is D.

Explanation of the correct option:

1. The frequency of recombination is the number of crossovers formed between any two genes.
2. Alfred Sturtevant explained that the recombination frequency between gene pairs is the measure of distance between the genes.
3. He said that the recombination frequency is inversely proportional to the distance between the genes.

Explanation of the incorrect options:

Option A:

1. Sutton and Boveri were the scientists who gave the chromosomal theory of inheritance.
2. It states that genes are units of heredity and are found in the chromosomes.
3. They had nothing to do with the frequency of recombination between gene pairs.

Option B:

1. Morgan speculated that the frequency of recombination was identified with the distance between the genes on a chromosome.
2. But, Sturtevant was the first to clarify that the extent of the hybrid could be utilised to estimate the separation between genes.

Option C:

1. Gregor J. Mendel gave the Mendel's laws of inheritance.
2. It states that due to inheritance, all members of the same family have similar characteristics.
3. He had nothing to do with the frequency of recombination between gene pairs.

Final answer: The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by Alfred Sturtevant.