Summary of data used in these analyses.

<p>Number of reads reflects the number of aligning reads after removing duplicate read pairs and filtering for low quality alignments (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0023683#s4" target="_blank">Methods</a>). Gender was determined by looking at coverage of reads in specific representative regions of the X and Y chromosomes (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0023683#s4" target="_blank">Methods</a>). Number of genotypes called is from the autosomes only, which is what was used for downstream comparisons.