I take it this is the "normal" hemoglobin sequence (or at least a small part of it - the real gene is much much longer)
I like to space things out to keep track in 3's
DNA
CAC GTG GAC TGA GGA CTC CTC
The resulting mRNA is:
CAC GUG GAC UGA GGA CUC CUC
The amino acid sequence (you need a codon table to find this) - I will put 3 letter code under the codons from the mRNA:
CAC GUG GAC UGA GGA CUC CUC
HIS VAL ASP STOP GLY LEU LEU
With the stop codon in here, this is the mutated gene - that causes sickle cell anemia.