Table 1.

The number of receptor and control genes that became pseudogenes along the sechellia and simulans lineages

Genes	Status	D. sechellia, n	D. simulans, n	P value*
Or	Pseudo	6	0
	Intact	57	63	0.012
Gr	Pseudo	13	2
	Intact	60	71	0.003
Ors + Grs	Pseudo	19	2
	Intact	117	134	0.0001
Controls†	Pseudo	9	2
	Intact	181	188	0.03
Filtered	Pseudo	17	2
Ors+Grs†	Intact	102	117	0.0003

Pseudo, pseudogene.

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

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