What Is Recombination Frequency?

Recombination frequency is a measure of genetic linkage and is used in the creation of a genetic linkage map.

Recombination frequency (θ) is the frequency with which a single chromosomal crossover will take place between two genes during meiosis.

What does recombination frequency tell us?

Recombination frequency (genetic distance) is determined by the frequency of the recombination events between the two genes in meiosis. The greater the physical distance between the two genes, the more likely are they to recombine during any given meiosis event.

What is the recombination frequency between these two genes?

If the genes are on different chromosomes, the answer is 50% (independent assortment). If the two genes are on the same chromosome, the recombination frequency will be somewhere in the range from 0 to 50%. The “map unit” (1 cM) is the genetic map distance that corresponds to a recombination frequency of 1%.

How does recombination occur?

Recombination occurs when two molecules of DNA exchange pieces of their genetic material with each other. One of the most notable examples of recombination takes place during meiosis (specifically, during prophase I), when homologous chromosomes line up in pairs and swap segments of DNA.

How do you find Cotransduction frequency?

The cotransduction frequency is the ratio of transductants that co-inherited both markers divided by the total number of transductants. The Wu formula can be used to estimate the correlation between cotransduction frequency and the physical distance between two genetic markers.