Sex Determination: Balancing Selection in the Honey Bee Deborah Charlesworth  Current Biology  Volume 14, Issue 14, Pages R568-R569 (July 2004) DOI: 10.1016/j.cub.2004.07.014

Figure 1 Diversity among different type I sequences of the honey-bee sex-determining gene csd. (A) The exon structure of the csd gene. (B) The diversity is expressed on a per site basis, in order to compare the diversity levels for synonymous and non-synonymous sites (reviewed in [12]), and given as values multiplied by 100. Current Biology 2004 14, R568-R569DOI: (10.1016/j.cub.2004.07.014)