Your Query returns 11 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
hunchbackNM_00878010090un    wt    hbs    Pax-1    undulated    Pax1   
hunchbackAJ0053747238
hunchbackAJ0053757233
hunchbackAJ0053767245
hunchbackZ302817130
hunchbackX916187070
hunchbackAY0406067009
hunchbackAJ13104185120
hunchbackAH0109767009
hunchbackAY0406077009
hunchbackAY0406057009

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002