Most detailed analysis of recombination landscape in Arabidopsis published

Salomé et al

Now in Heredity by Salomé et al.: The recombination landscape in Arabidopsis thaliana F₂ populations Recombination partitions alleles segregating in the progeny of hybrids, and thus has important consequences for the distribution of phenotypic variation in a population. We examined genome-wide recombination events in over 7000 plants from 17 F2 populations derived from crosses between 18 Arabidopsis thaliana accessions. We observed segregation distortion between parental alleles in over half of our populations. Most plants carry only one or two XOs per chromosome pair, and therefore inherit very large, non-recombined genomic fragments from each parent. Recombination frequencies vary between populations but consistently increase adjacent to the centromeres.