Molecules that function to replicate DNA in the cell?
There is not really such a thing as a mirror image of DNA in nature. DNA polymerase may be the "molecule" that you are thinking of, it is an enzyme that replicates DNA. When the polymerase makes a new strand of DNA, it uses an existing strand of DNA as a template. The new strand of DNA is not in fact a mirror image of the template strand, but it is the closest thing possible. The new strand is called a complementary strand, not a mirror image.Existing DNA (template for polymerase): ATC TGA CCG GAC TAG GGTNew strand (made by polymerase): TAG ACT GGC CTG ATC CCAAlternatively, by mirror image of DNA you may be thinking of RNA, a ribonucleotide that is made by RNA polymerase. The process is similar to that described above, but the new complementary strand is made out of ribonucleic acid rather than deoxyribonucleic acid.