Diapositiva 1
Diapositiva 1
Diapositiva 1
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Site-specific models Allow ω vary among sites.<br />
H 0: uniform selective pressure among sites (M0)<br />
H 1: variable selective pressure among sites (M3)<br />
p p<br />
ω ω<br />
Likelihood ratio test (LRT)<br />
2Δl = 2 (l 1-l 0) χ 2 distribution<br />
SERVE PER VERIFICARE<br />
SE ω VARIA FRA I SITI.<br />
NON E’ CONSIDERATO UN<br />
TEST PER VERIFICARE LA<br />
PRESENZA/ASSENZA DI<br />
SELEZIONE