Question: 112 Frequency of recombination between gene pairs on same chromosome as a measure of the distance between genes to map their position on chromosome, was used for the first time by
(1) Alfred Sturtevant
(2) Henking
(3) Thomas Hunt Morgan
(4) Sutton and Boveri
Answer: Option (1)
Explanation:
Alfred Sturtevant was a student of Thomas Hunt Morgan.
He was the first scientist to recognize that the frequency of recombination between two
genes is directly proportional to the distance between them on a chromosome.
Using this principle, he constructed the first genetic linkage map.
Recombination frequency was expressed in map units or centimorgans to represent gene distance.
Thus, the use of recombination frequency to map gene positions on chromosomes was
first done by Alfred Sturtevant.