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  • The recombination frequency between the genes a & c is , b & c is , b & d is <img alt="9%"

The recombination frequency between the genes a & c is 5%, b & c is 15%, b & d is 9%, a & b is 20%, c & d is 24% and a & d is 29%. What will be the sequence of these genes on a linear chromosome? 

Option: 1

d,b,a,c


Option: 2

a,b,c,d


Option: 3

a,c,b,d


Option: 4

a,d,b,c


Answers (1)

best_answer

Distance between genes is measured by frequency of recombination.

According to the question,

-Recombination frequency between a & d is highest. This means they are farthest.

-So, option 2 & 3 can be our answer

        a__________________b
-Recombination frequency between

a and b = 20%

a and c = 5%

so, a and c are close.

Hence the sequence is

a c b d

Hence, Option (3) is correct.

Posted by

Irshad Anwar

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