Not exact matches
Unlike
most animals, sea
lampreys, an invasive, parasitic species of fish damaging the Great Lakes, could become male or female depending on how quickly they grow, according to a U.S. Geological Survey study.
They compared 146 genes in many chordates, including hagfish and
lamprey (considered the
most primitive vertebrates) and larvaceans, which are sea - faring relatives of sea squirts.