Genetics & evolution · HL
Recombination frequency
Find the proportion of recombinant offspring.
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Number formats & units
Use decimal dots in datasets. Single values also accept decimal commas and scientific notation such as 1.2e-3 or 1.2 × 10⁻³.
Calculated locally. No account or input upload.
Result & working
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Interpretation & assumptions
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Formula & example
The relationship
What the variables mean
| Symbol | Meaning |
|---|---|
| recombinant | Offspring/gametes with non-parental allele combinations. |
Worked example
- Recombinant count
- 84
- Total count
- 500
16.8%
Follow the example steps
- RF = recombinant/total × 100 = 84/500 × 100 = 16.8%
Common mistakes
Count only recombinant offspring in the numerator.
Incorrect approach
20/100: RF = 100 × 80/100 = 80%
Correct approach
RF = 100 × 20/100 = 20%
More checks before you submit
- Identify parental and recombinant classes before summing counts.
Method notes
Recombination frequencies approach 50% for loci that assort independently or are very far apart.