Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
UBE2G1BC0455127955fi33c04    zgc:55974    wu:fi33c04   
UBE2G1NM_1998637955fi33c04    zgc:55974    wu:fi33c04   
Ube2g1NM_025985100902700059C12Rik   
UBE2G1BC0262889606UBE2G    UBC7    E217K   
UBE2G1BC0027759606UBE2G    UBC7    E217K   
UBE2G1AY4161459606
UBE2G1AY4161469598
UBE2G1AY41614710090
UBE2G1NM_0033429606UBC7    E217K    UBE2G   
UBE2G1NM_1826829606UBC7    E217K    UBE2G   
Ube2g1NT_03951510090
UBE2G1NT_0107189606

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

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Text2Knowledge ... Yong Huang 2002