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.Henking 2.Thomas Hunt Morgan 
3.Sutton and Boveri 4.Alfred Sturtevant 
Subtopic:  Understanding Linkage | Linkage Types | Recombination & Gene Mapping |
 71%
From NCERT
NEET - 2023
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Mendel's law of Independent assortment does not hold good for the genes that are located closely on the same chromosome.
Reason (R): Closely located genes assort independently.

 
In the light of the above statements, choose the correct answer from the options given below:

1. (A) is not correct but (R) is correct.
2. Both (A) and (R) are correct and (R) is the correct explanation of (A).
3. Both (A) and (R) are correct but (R) is not the correct explanation of (A).
4. (A) is correct but (R) is not correct.
Subtopic:  Dihybrid Cross Analysis | Linkage Types | Recombination & Gene Mapping |
 67%
From NCERT
NEET - 2022

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