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  1. DNA sequencing (article) | Biotechnology | Khan Academy

    DNA sequencing is the process of determining the sequence of nucleotide bases (As, Ts, Cs, and Gs) in a piece of DNA. Today, with the right equipment and materials, sequencing a short piece of DNA is …

  2. DNA replication (article) - Khan Academy

    DNA replication proceeds outward in both directions from each origin of replication. DNA replication begins at origins of replication, which are specific, short nucleotide sequences on the chromosome. …

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  4. Overview of translation (article) | Khan Academy

    How the nucleotide sequence of an mRNA is translated into the amino acid sequence of a polypeptide (protein).

  5. DNA questions (practice) - Khan Academy

    DNA questions The leading strand of a DNA molecule has the following sequence: 5’-CGCATGTAGCGA-3’ Which of the following sequences is complementary to the leading strand …

  6. DNA proofreading and repair (article) | Khan Academy

    Mechanisms to correct errors during DNA replication and to repair DNA damage over the cell's lifetime.

  7. Telomeres and telomerase (article) | Khan Academy

    If you could zoom in and look at the DNA on the tip of one of your chromosomes, what would you see? You might expect to find genes, or perhaps some DNA sequences involved in gene regulation. …

  8. Restriction enzymes & DNA ligase (article) | Khan Academy

    A restriction enzyme is a DNA-cutting enzyme that recognizes specific sites in DNA. Many restriction enzymes make staggered cuts at or near their recognition sites, producing ends with a single …

  9. Stages of transcription: initiation, elongation ... - Khan Academy

    Key points: Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make an RNA molecule. RNA polymerase is the main transcription enzyme. Transcription begins …

  10. Nucleic acids (article) | Khan Academy

    Nucleic acids, and DNA in particular, are key macromolecules for the continuity of life. DNA bears the hereditary information that’s passed on from parents to children, providing instructions for how (and …