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Recombination Frequency Calculator

🧬 Genetics & evolution. Use the Recombination frequency formula to find recombination frequency, recombinant offspring, total offspring: pick the value you want, type the others, and the answer updates as you go.

RF=recombinant offspringtotal offspring×100RF = \dfrac{\text{recombinant offspring}}{\text{total offspring}} \times 100

1% recombination = 1 map unit (centimorgan) between two genes.

Recombination frequency17 %

Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.

What each letter means

QuantityUnit
Recombination frequency%
Recombinant offspringno unit
Total offspringno unit

Worked example

Find the recombination frequency when Recombinant offspring = 34, Total offspring = 200.

Using RF = (recombinant offspring)/(total offspring) × 100: Recombination frequency = 17 %.

Frequently asked questions

What is the formula for Recombination frequency?

RF = (recombinant offspring)/(total offspring) × 100. 1% recombination = 1 map unit (centimorgan) between two genes.

What do the letters stand for, and what units are used?

Recombination frequency in %, Recombinant offspring, Total offspring.

How do you calculate recombination frequency?

Put the values into RF = (recombinant offspring)/(total offspring) × 100. For example, with Recombinant offspring = 34, Total offspring = 200, recombination frequency = 17 %.

Can I solve for a different value?

Yes. In the calculator above, pick the circle next to any value (recombination frequency, recombinant offspring, total offspring) and fill in the others: it rearranges the formula for you.

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