Final answer:
The coefficient of coincidence for three-point mapping can be calculated by dividing the observed double crossovers by the expected double crossovers.
Step-by-step explanation:
The coefficient of coincidence is a measure used in genetic mapping to determine the level of interference between two genetic events. In a three-point mapping scenario, the coefficient of coincidence can be calculated by dividing the observed double crossovers by the expected double crossovers. Here's how:
- Calculate the expected number of double crossovers by multiplying the individual recombination frequencies between the three points.
- Count the number of observed double crossovers.
- Divide the observed double crossovers by the expected double crossovers to find the coefficient of coincidence.