Use the Following Information to Answer the Question

question 18

Multiple Choice

Use the following information to answer the question.


The numbers in the boxes are the recombination frequencies in between the genes (in percent) .
In a series of mapping experiments, the recombination frequencies for four different linked genes of Drosophila were determined as shown in the figure. Based on this information, what is the order of these genes on a chromosome map?

• A) rb-cn-vg-b
• B) cn-rb-b-vg
• C) b-rb-cn-vg
• D) vg-cn-b-rb

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