Recombination and mapping - AndersenLab/Genetic-Analysis GitHub Wiki

Recombination

Recombination produces recombinant and parental chromosome products.

Recombination

Three Factor Cross

Genetic crosses can be used to determine genetic distance, which is measured in centimorgans. A centimorgan is the distance between two loci at which a recombination event is expected to occur at a frequency of 0.01. Recombination frequencies can be used to map traits - determining their distance from one another, and identifying their position on a chromosome.

Three factor cross

Marey Maps

MareyMap is a software package that can be used to visualize the relationship between recombination (centimorgan) frequency and physical position. The plot below illustrates the relationship in C. elegans.

Marey Map

Additional Resources