A portion of the ​β​‑globin allele responsible for​ sickle‑c…

A portion of the ​β​‑globin allele responsible for​ sickle‑cell anemia contains the sequence​ CCTGTGGAG, whereas the same region of the normal ​β​‑globin allele contains the sequence CCTGAGGAG. Which allele would be cut by the restriction enzyme Dde​I, which cuts at the sequence​ CTNAG, where N is any​ base?