Your Query returns 18 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
alas1BC0545747955ALAS-N    wu:fb58d01    fb58d01    wu:fi12g09    fi12g09   
Alas1NM_02055910090ALAS    Alas-1    Alas-h    125290
ALAS1BC0117989606ALAS    ALASH    125290
ALAS1AY4212969606125290
ALAS1AY4212979598
ALAS1AY42129810090125290
ALAS1X6673610116
ALAS1NM_1991669606ALAS    ALASH    125290
ALAS1NM_0006889606ALAS    ALASH    125290
Alas1NT_03947710090125290
Alas1AF25591210116
Alas1AF25561610090125290
Alas1AY37955010090125290
Alas1BC02211010090ALAS    Alas-h    125290
Alas1BC06179310116
alas1NM_2012877955ALAS-N    fb58d01    fi12g09    wu:fb58d01    wu:fi12g09   
Alas1NM_02448410116
ALAS1NT_0225179606125290

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

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Text2Knowledge ... Yong Huang 2002