MareyMap Online

A web-service for estimating recombination rates along the genome


MareyMap relies on comparing the genetic and the physical maps of a given chromosome to estimate local recombination rates (given by the slope of the curve describing the relationship between both variables).
This graphical method is called the Marey map method and was introduced by A. Chakravarti in 1991.
MareyMap accepts Marey map data as input (genetic and physical positions of markers for a set of chromosomes of a species) and will return local recombination rate estimates.
MareyMap Online offers a simplified version of the R package MareyMap (Siberchicot et al. 2015 ; Rezvoy et al. 2007).
A database including Marey map data is provided, please consider leaving your own curated data for enriching the database.


Follow one step after the other to get estimates:

  • Step 1: Upload your data or select a dataset in our database

  • Step 2: Remove aberrant points

  • Step 3: Use one of our estimation methods

  • Step 4: Get estimates for a list of genes

  • Step 5: Share your curated data (optional)



See here information about the format required
See here an example file




Datasets included in the MareyMap Online database




Reset your data curation


Only for this chromosome


Save your data curation done so far


For all chromosomes


Save the plot



Please wait, calculations are in progress.



Sliding Window: fitting linear regressions to data points within a sliding window

More information

Loess: Fitting local degree 2 polynomial regression to the data

More information

Cubic spline: fitting 3rd order polynomials to data

More information






Save estimates


Only for this chromosome

For all chromosomes




Save plots




Can we contact you to include your curated data in our database ?


MareyMap Online has been developped by Adrien Bessy, Aurélie Siberchicot, Laurent Guéguen and Gabriel Marais.

It runs on the shiny server of the LBBE .

If you have any questions, contact Aurélie Siberchicot at aurelie.siberchicot@univ-lyon1.fr.