Question

You perform a particular three-point test cross in Drosophila that produced 1,000 flies. You expect 30 double crossover recombinants, however, you could only detect 24. What is the value for interference?

a) 0.20
b) 0.30
c) 0.40
d) 0.50

Answer 1

The value for interference is 0.20.

Step-by-step explanation:

The value for interference can be calculated using the formula:

Interference = 1 - (Observed double crossover frequency / Expected double crossover frequency)

In this case, the observed double crossover recombinants are 24 and the expected double crossover recombinants are 30. Plugging these values into the formula, we get:

Interference = 1 - (24/30) = 0.20

Therefore, the value for interference is 0.20.