Table 2. Summary of studies of Haldane's Rule since 1996, as well as totals when combined with Coyne and Orr (2004), after removal of any overlap. (for a full list, see Supplementary Table 1).

Taxon	Sex determination		This study: N (obeying Haldane′s Rule)	This study: N (not obeying HR)	Coyne and Orr, 2004 (based on Coyne, 1992) N (obeying HR)	Total obeying
Mammalia	Male heterogamety	Sterility	9	0	25	34
		Inviability	4	0	1	5
Aves (birds)	Female heterogamety	Sterility	3	1	21	24
		Inviability	215	2	30	245
Reptilia	Female heterogamety	Sterility	0	1		0
		Inviability	1	0		1
Amphibia	Multiple	Sterility	0	1		0
		Inviability	66	28		66
Teleostei (fish)	Multiple	Sterility	5	0		5
		Inviability	6	37		6
Insecta
Diptera	Male heterogamety	Sterility	17	0	112	129
		Inviability	4	1	13	17
Hemiptera	Male heterogamety	Sterility	1	0		1
		Inviability	1	1		1
Hymenoptera	Haplodiploidy	Sterility	0	0		0
		Inviability	4	0		4
Coleoptera	Male heterogamety	Sterility	3	0		3
		Inviability	1a	1		1
Lepidoptera	Female heterogamety	Sterility	6	1	11	17
		Inviability	4	1	29	33
Crustacea	Male heterogamety	Sterility	0	5		0
		Inviability	0	0		0
Gastropoda	Female heterogamety	Sterility	0	1		0
		Inviability	1	0		1
Nematoda	Male heterogamety	Sterility	0	0		0
		Inviability	1	0		1
Total		Sterility	N=44	10 (19%)	169	213
		Inviability	N=308	71 (19%)	73	381

Abbreviation: HR, Haldane's Rule.

^aDeformities.