 | Describe the Mutation Thirty-two base pairs are missing in the CCR5 allele from the EU men, so it is called CCR5Δ32. The nucleotides of both the wildtype and the Δ32 allele are grouped here to show the open reading frame (ORF). How does the 32 base pair deletion affect the ORF? INSTRUCTIONS: Choose one of the explanations of how the deletion affects the ORF. |  | |  |