( ( These ( ( subtypes or ) clades ) ) ( ( are ( classified ( according ( to ( degrees ( of ( genetic similarity ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT These) (NNS subtypes) (CC or) (NNS clades)) (VP (VBP are) (VP (VBN classified) (PP (VBG according) (PP (TO to) (NP (NP (NNS degrees)) (PP (IN of) (NP (JJ genetic) (NN similarity)))))))) (. .)))
These subtypes or clades are classified according to degrees of genetic similarity.
(ROOT (S (NP (DT A) (NN clade)) (VP (VBZ is) (NP (NP (CD one) (NN way)) (PP (IN of) (NP (VBG classifying) (NNS organisms))))) (. .)))