Table 1.

Selection Intensity for Pseudogenes in Whales, Sirenians and Bats

Gene	Focal Clades	Backgrounds	Selection Intensity	P-Value
Lyg1	Cetartiodactylan pseudogenes	Intact Lyg1	0	<0.001
	Sirenian pseudogenes		0.31	0.011
Lyg2	Cetartiodactylan pseudogenes	Intact Lyg2	0.04	<0.001
	Sirenian pseudogenes		0.11	0.008
	Chiropteran pseudogenes		0.13	<0.001