RNA

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DNA

Sections of DNA (genes) are transcribed onto single stranded molecule - RNA

RNA - simular to DNA

        - but has a ribose sugar (not deoxyribose)

        - is single stranded

        - has organic base Uracil not Thymine

mRNA

mRNA - long strand arranged in a single helix

          - forms a mirror copy of base sequences to DNA (except U) so is complementary…

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