Homeobox genes are involved in various aspects of the development of multicellular animals, including anterior-posterior patterning of the body plan. We performed a genomic survey of homeobox genes in the Japanese pearl oyster, Pinctada fucata, and annotated 92 homeobox-containing genes and five homeobox-less Pax genes. This species possesses 10 or 11 Hox genes. We annotated another homeobox genes that cover 77 out of the 111 gene families identified in the amphioxus genome. Investigation of these repertoires of homeobox genes will shed new light on the comparatively less well-understood lophotrochozoan development.
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Vol. 30 • No. 10