Table 2.

Comparison of the rate of gene loss (proportion of genes that became pseudogenes vs. remained intact) among Ors/Grs with that among control genes within species

Species	Status	Ors+Grs*	Controls*	P value†
sechellia	Pseudo	17	9	0.003
	Intact	102	181
simulans	Pseudo	2	2	0.6
	Intact	117	188

Pseudo, pseudogene.

*Genes with indels ≤ 4 bp in D. sechellia are excluded (see Materials and Methods).

^†P values are from χ² tests on each 2 × 2 table.