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  1. Mode of DNA replication: Meselson-Stahl experiment

    There were three basic models for DNA replication that had been proposed by the scientific community after the discovery of DNA's structure. These models are illustrated in the diagram below:

  2. Molecular mechanism of DNA replication - Khan Academy

    New DNA is made by enzymes called DNA polymerases, which require a template and a primer (starter) and synthesize DNA in the 5' to 3' direction. During DNA replication, one new strand (the leading …

  3. DNA structure and replication review (article) | Khan Academy

    DNA replication occurs through the help of several enzymes. These enzymes "unzip" DNA molecules by breaking the hydrogen bonds that hold the two strands together.

  4. Semi-conservative replication (video) | Khan Academy

    Here, we focus on the Meselson-Stahl experiment, which proved DNA replication is semi-conservative. In this process, each new DNA pair consists of one old strand and one new strand, ensuring …

  5. DNA replication (article) | Khan Academy

    During DNA replication, the two strands of the DNA double helix are unwound and separated by enzymes. Each strand then serves as a template, or guide, for synthesizing a new, complementary …

  6. Molecular mechanism of DNA replication - Khan Academy

    New DNA is made by enzymes called DNA polymerases, which require a template and a primer (starter) and synthesize DNA in the 5' to 3' direction. During DNA replication, one new strand (the leading …

  7. DNA as the genetic material | Biology archive - Khan Academy

    This unit is part of the Biology archive. Browse videos and articles by topic. For our most up-to-date, mastery-enabled courses, check out [High School Biology](https ...

  8. Mode of DNA replication: Meselson-Stahl experiment

    There were three basic models for DNA replication that had been proposed by the scientific community after the discovery of DNA's structure. These models are illustrated in the diagram below:

  9. Discovery of the structure of DNA (article) | Khan Academy

    In Watson and Crick's model, the two strands of the DNA double helix are held together by hydrogen bonds between nitrogenous bases on opposite strands. Each pair of bases lies flat, forming a "rung" …

  10. Gene expression and regulation | AP®︎/College Biology | Khan …

    DNA helps make us who we are, but how exactly does it work? In this unit, we'll examine the nitty gritty of replication, transcription, and translation, and learn how seemingly small mutations can have a big …