Dellaporta et al. (2006) report on the complete mitochondrial genome of Trichoplax adhaerens, which they note is the largest known metazoan mtDNA genome--at 43,079 bp, it is more than twice the size of the typical metazoan mtDNA. Srivastava et al. (2008) present a preliminary analysis of the genome of Trichoplax adhaerens, which is among the smallest known metazoan genomes at about 98 million base pairs.
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