About 288 results
Open links in new tab
  1. Khan Academy | Khan Academy

    Oops. Something went wrong. Please try again. Uh oh, it looks like we ran into an error. You need to refresh. If this problem persists, tell us.

  2. Transcription: an overview of DNA transcription (article ... - Khan …

    The main enzyme involved in transcription is RNA polymerase, which uses a single-stranded DNA template to synthesize a complementary strand of RNA. Specifically, RNA polymerase builds …

  3. Leading and lagging strands in DNA replication - Khan Academy

    On the leading strand, DNA polymerase catalyzes the continuous synthesis of DNA in the 5' to 3' direction. However, on the lagging strand, DNA synthesis occurs in short fragments called …

  4. 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 …

  5. DNA replication (article) | Khan Academy

    Starting at primers, DNA polymerase synthesizes new DNA strands in the 5’ to 3’ direction. This happens continuously on the leading strand, and discontinuously on the lagging strand.

  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 …

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

    During DNA synthesis, most DNA polymerases "check their work," fixing the majority of mispaired bases in a process called proofreading. Immediately after DNA synthesis, any remaining …

  8. DNA repair 1 (video) | Khan Academy

    DNA polymerase III plays a crucial role in DNA replication, proofreading and correcting errors. It works alongside DNA helicase and other enzymes to ensure accurate replication.

  9. DNA transcription and mRNA processing (video) | Khan Academy

    It does that the same way that when we studied DNA polymerase, it does it in only one direction. It can only add more nucleotides on the three prime end. So it encodes from the five prime to …

  10. Polymerase chain reaction (PCR) (video) | Khan Academy

    PCR (Polymerase Chain Reaction) is a vital technique in molecular biology, enabling researchers to amplify specific DNA fragments exponentially. Essential for cloning, forensics, and medical …