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Nucleic Acid Structure, DNA Replication,
and Chromosome Structure -…
Nucleic Acid Structure, DNA Replication,
and Chromosome Structure
Nucleic Acid Structure
DNA Structure:
- Nucleotides – the building blocks of DNA and RNA
- Strand – a linear polymer strand of DNA or RNA
- Double helix – the two strands of DNA
- Chromosomes – DNA associated with an array of different proteins into a complex structure
- Genome – the complete complement of genetic material in an organism
DNA
Formed from nucleotides
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Nitrogenous base
Purines: double ring – Adenine (A), Guanine (G)
Pyrimidines: single ring – Cytosine (C), Thymine (T)
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RNA
Formed from nucleotides
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Nitrogenous base
Purines – Adenine (A), Guanine (G)
Pyrimidines – Cytosine (C), Uracil (U)
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