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The Role of DNA

The fundamental role of DNA is for replication of the specific information, by coding for the
genetic information for the messenger RNA (mRNA ) via transcription.




Definitions

The section of DNA that holds the information for one polypeptide chain is called a cistron
or gene
Where…

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mRNA is complementary to DNA. It is single stranded and arranged into a single helix that can
easily be broken down.

Transfer RNA

tRNA molecules transport specific amino acids to the ribosome during protein synthesis. These are
between 75 and 90 bases in side. tRNA is single stranded and arranged…

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