>>13104907to make mRNA your body has to cut out pieces of DNA first to allow the transcribase to bind to the start of the gene and stop when it reaches the end of the cut off segment where the gene ends. humans do not have the enzymes to splice large chunks of DNA back in however, so in order to replace removed DNA, the body takes one of the mRNAs and a transcodase and starts translating the mRNA codon by codon on the end of the DNA. When the vaccine mRNA arrives in your body, your body thinks it produced it from spliced out DNA so it begins adding it to the end of your DNA.
