A series of three genes is known to be on the same chromosome.In examining recombination events,you obtain the data shown below.
No observable recombination 30%
Between A and B 15%
Between B and C 35%
Between A and C 20%
What is the order of genes on this chromosome?

Question

Quizplus · Accepted Answer

The highest percentage of recombination occurs between B and C (35%), indicating that they are farthest apart from each other on the chromosome. The next highest percentage of recombination occurs between A and C (20%), indicating that they are also somewhat far apart on the chromosome. The lowest percentage of recombination occurs between A and B (15%), which suggests that they are closest together on the chromosome, with A likely being first and B being second in the order. Therefore, the order of genes on the chromosome is likely BAC.

A Series of Three Genes Is Known to Be on the Same