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  1. 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 …

  2. 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.

  3. 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:

  4. Leading and lagging strands in DNA replication

    DNA replication is a precise process where DNA unwinds and splits into two strands. Each strand then serves as a template for a new DNA molecule. The leading strand is built continuously, while the …

  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. 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 …

  7. DNA structure and replication (practice) | Khan Academy

    In a sample of double-stranded DNA, 30 % of the nitrogenous bases are adenine (A). What percentage of the nitrogenous bases in the sample are thymine (T)?

  8. DNA replication (article) | Khan Academy

    High school biology Course: High school biology > Unit 5 Lesson 2: DNA structure and replication DNA Antiparallel structure of DNA strands Leading and lagging strands in DNA replication

  9. DNA structure (article) | Khan Academy

    A video shows the three-dimensional shape of a DNA double helix. The double helix consists of two DNA strands wound around each other, with their sugar-phosphate backbones on the outside of the …

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

    DNA replication Learn DNA replication and RNA transcription and translation Leading and lagging strands in DNA replication