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Table 3 Distribution of classes and subclasses of homeobox genes among early branching taxa.

From: The homeodomain complement of the ctenophore Mnemiopsis leidyi suggests that Ctenophora and Porifera diverged prior to the ParaHoxozoa

  Ancestral eukaryote Amphimedon Mnemiopsis Nematostella Trichoplax Human/Drosophila
ANTP       
   Hox -- -- -- + + +
   ParaHox -- -- -- + + +
   Extended Hox -- -- + + + +
   NKL -- + + + + +
PRD       
   Q50 -- + + + + +
   N50 -- -- -- + + +
   K50 -- -- -- + + +
LIM -- + + + + +
POU -- + + + + +
SINE -- + + + + +
TALE + + + + + +
HNF -- -- -- + + +
CUT -- -- -- -- -- +
PROS -- -- -- -- -- +
ZF -- -- -- -- -- +
CERS -- -- -- -- -- +
  1. The first column contains the class (bold) or subclass (indented). A plus indicates the presence of a clear member of the class or subclass. Alternatively, a minus indicates the absence of a clear member of the class or subclass. Inference of the homeodomain complement of the ancestral eukaryote is based on Derelle et al. [22].