The authors looked at the number of recombination events and found a difference in both the number and, to a lesser extent, location of crossovers in males and females. The authors looked at a small population of humans using a chip to look for SNP haplotypes in nuclear families with multiple children. Hotspots account for most crossover events in both sexes, while some hotspots seem reserved more for one sex versus the other. Heritability was not high, but was significantly different from zero to demonstrate heritability of hotspot usage.
Other notes:
-mothers with higher recombination rates have slightly more offspring
-viable offspring of older mothers tend to have higher recombination rates
-recombination rates go up with gene density
-recombination rates reduce near genes, highest at a distance away from start of genes
Recombination rate vs Distance from Transcriptional Start Site
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