Scientists are closer to unraveling the genetic pedigree of all backboned creatures, but the fish branches of the vertebrate family tree lack detail compared with those of flesh and fowl, a new analysis suggests.
The complete bird and mammal branches of the tree of life are within reach, scientists report online March 8 in BMC Biology. But the genetic genealogies of other backboned creatures, especially marine species, are woefully understudied.
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