How to use the haldane map distance to recombination calculator
Convert a genetic map distance in Morgans into the expected recombination fraction between two genes. Enter map distance in the field above; the recombination fraction, map distance are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “Haldane mapping function”, “recombination fraction from map distance”, “centimorgans to recombination percent”, “calculate haldane map distance to recombination”, “find recombination fraction”.
Formula
Variables
- d — Map distance (Morgans)
Worked example
With map distance = 0.25 Morgans, the calculator gives recombination fraction ≈ 19.67347 %; map distance ≈ 25 cM.
Frequently asked questions
What is the haldane map distance to recombination calculator used for?
Convert a genetic map distance in Morgans into the expected recombination fraction between two genes. It helps with questions such as “Haldane mapping function”, “recombination fraction from map distance”, “centimorgans to recombination percent”.
What is the formula for the haldane map distance to recombination calculation?
Recombination fraction (%) = 50 × (1-exp(-2 × d)). Map distance (cM) = d × 100. Here d is map distance (Morgans).
What inputs do I need for the haldane map distance to recombination calculator?
You need map distance in Morgans. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the haldane map distance to recombination calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the haldane map distance to recombination result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.