Are algal genes in nonphotosynthetic protists evidence of historical plastid endosymbioses?

BMC Genomics

Table 5 Regression statistics for total number of first hits versus size of database queried.

	Analyses with all taxa				Analyses without heterokont sister group
Genome	R²	P	No. σ¹ Heterokont	Δ σ Reds	R²	P	No. σ Reds
P. ramorum²	0.841	0.001	2.6	-0.19	0.977	<0.001	0.363
P. sojae	0.855	<0.001	2.46	-0.047	0.965	<0.001	0.198
Thalassiosira	0.493	0.066	2.71	0.212	0.947	<0.001	1.597
Phaeodactylum	0.479	0.074	2.71	0.194	0.943	<0.001	1.515

¹ Residuals from regression analysis expressed in standard deviations (σ) from mean residual value. Significant results are in bold.

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