Evolutionary Change within a Bipotential Switch Shaped the Sperm/Oocyte Decision in Hermaphroditic Nematodes
Figure 2
Cloning the C. briggsae Fog gene trr-1 by SNP mapping.
(A) Genetic map of LGII, showing the location of trr-1 based on three-factor crosses (Methods). The positions of potential sex-determination genes on the top are from WormBase, and those of the marker genes are from www.briggsae.org. (B) The region extending from 7100 to 7800 kb and the position of each SNP were downloaded from WormBase. The structure of critical recombinant chromosomes is indicated by color, and the frequency of these recombinants is shown at the right. (C) The predicted genes in the region extending from 7560 to 7720 kb were downloaded from WormBase. (D) The predicted structure of trr-1 was downloaded from WormBase, The location of each missense allele is marked by an arrow, and the extent of each deletion by a line.