Question

The following recombination frequencies were found for four genes on the same chromosome; between genes A and B - 45. Which of the following is the correct order of the genes on the chromosome?

1) B-C-D
2) A-C-D
3) A-D-C-B
4) A-C-D-B
5) C-A-D-B

Answer 1

The correct order of the genes on the chromosome is A-C-D-B.

Step-by-step explanation:

The correct order of the genes on the chromosome is 4) A-C-D-B.

Recombination frequency is used to determine the order of genes on a chromosome. In this case, the highest recombination frequency is found between genes A and B, indicating that they are the farthest apart. Therefore, gene A is the first gene, followed by gene C, gene D, and finally gene B.