Question

genes GSHL are located on same chromosome.The recombination percentage is between L and G is 15%,H and S is 20% ,S and L is 50%. The correct order of genes is a)GHSL b)SHGL c)SGHL d)HSLG .... pls help.... ​

Answer 1

More the percentage of recombination, farther away the genes will be from each other.

So there is greater percentage of S and L
After it H and S
And in last L and G

SHGL is correct

But I'm not sure.

Answer 2

The order of genes on the chromosome will be SHGL.

Explanation:

As we know, the percentage of recombination is directly proportional to the distance between genes. So,

• Genes with lower recombination percentage are closer to each other.
• Genes with higher recombination percentage are located farther from each other.

Here,

• L and G are nearest because recombination percentage is only 15%.
• S and L are farthest because of recombination percentage 50%.
• H and S are also located near to each other because of recombination percentage 20%.

Based on these estimations, the sequence of genes on the chromosome will be - SHGL