Practice Questions

TLS Online TPP Program

#Question id: 15659

You calculate map distances between genes A, B, and C based on all pairwise dihybrid crosses. When you perform the trihybrid cross to verify your results, you discover that, despite analysis of a very large number of progeny, you have only about half as many double crossover progeny as you expect. Which explanation is the most reasonable?

#Unit 8. Inheritance Biology

Your dihybrid cross data are an underestimate of the distance between the more widely separated genes.
You are seeing an example of random interference
You are seeing an example of random sampling error.
None of these.