Your Query returns 4 Accession Numbers:

* OMIM link based on symbol match for human and mouse.
** HUGO symbol
Gene/AlleleAccessionNCBI TaxonidSynonyms Phenotype (OMIM) *
MekNM_01078410090MK   Mdk  
MEKNC_0043547227SOR   DSor   Dmek   D-MEK   D-SOR   DSOR1   DSORT   EK1-1   MAPKK   DMEK-1   CG15793   D-sor-1   DRODSOR1   sor/MEK1   D-MEK/Dsor   Su(Raf)34B  
MEKNM_0785437227SOR   DSor   Dmek   D-MEK   D-SOR   DSOR1   DSORT   EK1-1   MAPKK   DMEK-1   CG15793   D-sor-1   DRODSOR1   sor/MEK1   D-MEK/Dsor   Su(Raf)34B  
MEKAF1432019598

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Text2Knowledge ... Yong Huang 2002