what do you mean by preservation of heredity ?
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The credit information of a person is stored in the helix form as the sequence of bases along the polynucleotide chain.
DNA preserves the heredity information in the following manner :
- DNA molecules can duplicate themselves by replication.
- The single strand of DNA can act as a template on which a molecule of RNA is synthesized by process called transcription.
- The RNA molecule then directs the synthesis of specific protein which are characteristic of each organism by a process called translation.
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