Could you please help me to solve the guestion #2? I think the answer is 19.5 Is

Question

Could you please help me to solve the guestion #2? I think the answer is 19.5 Is it correct ?
Question 1 1 pts Two genes in Drosophila code for body color and eye color. The wild type body trait is gray (b') and the mutant version is black (b). The wild type eye color is red (p) and the mutant version is purple. These genes are right next to each other on the same chromosome and for the sake of this question, let's assume they never cross over. If you test cross a heterozygote for both genes (p'p/b'b) with a homozygous mutant for both genes (pp/bb), what is the expected ratio of offspring? All gray body/red eyes O All black body/purple eyes 50% gray body/red eyes and 50% black body/purple eyes O 50% gray body/purple eyes and 50% black body/red eyes

Explanation / Answer

Answer:

2). 19.5

Hint: Recombinant progeny are always small in number than the non-recombinant progeny. So, in the given data, gray.purple and black/red are the recombinants.

Recombination frequency = (number of recombinants / total number of progeny) * 100

RF = (11+13/123)100

RF = 19.51%

RF (%) = Distance between the genes (m.u.)

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