Recombination frequency is a number that describes the proportion of recombinant offspring produced in a genetic cross between two organisms.

Recombination frequency shows us if two genes are linked, and how tightly, by using data from the genetic crosses.

**Formula to calculate recombination frequency.**

Recombinant is a general name given when a piece of one DNA is combined with another DNA giving rise to a new DNA.

**Example:**

Suppose the number of recombinants in a family is 10 while the total number of off springs in that family are 20, calculate the recombination frequency.

Therefore, the recombination frequency is 50%.