Thanks for the reply! I tried to print out %hash1 to see whether it has the right thing, it lists the keys as expected but then lists the values as array (okay) but does not show them explicitly. 
ATA    ARRAY(0x183d294)
CTT    ARRAY(0x183d304)
CTG    ARRAY(0x182a674)
TTA    ARRAY(0x183d464)
ATG    ARRAY(0x278eb4)

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In reply to Re^2: Hash w/ multiple values + merging by sophix
in thread Hash w/ multiple values + merging by sophix

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