Converts recombination fraction back to genetic distance (in Morgans).
This is the inverse of Haldane's mapping function.
Usage
inverse_haldane_mapping(recombination_fraction)
Arguments
- recombination_fraction
Recombination fraction (r) between 0 and 0.5.
Value
Genetic distance in Morgans.
Details
Mathematical Formula:
Solving Haldane's equation for d:
$$d = -\frac{1}{2} \ln(1 - 2r)$$
Examples
# Convert recombination fraction to distance
inverse_haldane_mapping(0.25) # Returns ~0.347 Morgans
#> [1] 0.3465736
inverse_haldane_mapping(0.5) # Returns Inf (unlinked)
#> Warning: recombination_fraction = 0.5 corresponds to infinite genetic distance
#> [1] Inf