Table 5.

TFs Controlling Chemosensory Neuron Identity Exhibit a High Level of Nonsynonymous Polymorphism

Loci	Na	Ab	Sc	A/S
TF-motorneuron	7	19	161	0.1180*
TF-multiple	12	34	271	0.1255**
TF-chemosensory	8	64	282	0.2269

NOTE.—Significance is obtained from a χ² test: *P < 0.05, **P < 0.01.

The ratio of nonsynonymous to synonymous polymorphism in Caenorhabditis remanei is compared between TFs controlling chemosensory neuron differentiation to TFs affecting the motorneuron class and to those affecting several classes of neurons including, among other classes, motorneurons and/or chemosensory neurons. The list of TFs in each gene set is reported in supplementary table 3, Supplementary Material online.

^aN: number of loci.

^bA: number of amino acid replacement changes.

^cS: number of synonymous changes.