Question

If gene frequency between genes a and ċ is 2%;
b and c is 13%; b and d 4%; a and b 15%; c and
d 17% and a and d 19%, what will be the
sequence of these genes in a chromosome ?
1) a, c, b, d
2) a, b, c, d
3) d, b, a, c
4) a, d, b, c
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Answer 1

the correct gene sequence in a chromosome based on given gene frequency is

a,c,b,d

option 1 is correct,I think it is help ful

Answer 2

Answer:

The sequence of the genes a, b, c, and d in a chromosome when the gene frequency between genes a and c is 2%, b and c is 13%, b and d is 4%, a and b is 15%, c and d is 17% and a and d is 19% is: 1) a, c, b, d.

Explanation:

• Gene frequency helps in determining the gene order in a chromosome.
• In the given example, the gene frequency between a and d is 19%, hence, we conclude that they are present on the two extreme ends.
• a      19%                  d.
• Next, when we arrange the genes based on the given gene frequencies, the sequence of these genes would be as follows:

                    a   2%     c   13%     b     4%   d  

                    a                15%     b    

                    a       19%                                 d

• Therefore, it can be concluded that the sequence of genes a, b, c, and d in a chromosome would be a, c, b, d.