IB Biology Topic 7.1 (HL): DNA Structure and Replication

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  • Опубліковано 22 гру 2024

КОМЕНТАРІ • 6

  • @maxbartsch9862
    @maxbartsch9862 Рік тому +8

    finals in a month this is helping loads holy, thanks sm!

    • @tibertutor
      @tibertutor  Рік тому +1

      We're glad you enjoyed it! Check out the website for the full video :)

  • @adlesal24
    @adlesal24 Рік тому +1

    simplified fantastic explanation
    However, dont you think you reverse the position of primer and DNA piece at lagging strand (light blue sequence should follow the dark blue one)

    • @tibertutor
      @tibertutor  Рік тому

      Thank you! I understand your confusion. The reason for why it is this way round is due to the discontinuity on the lagging strand.
      The polymerase has to work in a 5' to 3' direction, but can only work after the primer is laid down.
      Therefore, since the DNA is unzipping from the right-hand side in this diagram, the new DNA will be rightwards of the primer.
      If you rewatch the video it should become clear!

  • @andreganasen7187
    @andreganasen7187 Рік тому

    Hi There,
    Why does the primase enzyme lay down RNA as a primer rather than DNA

    • @tibertutor
      @tibertutor  Рік тому +2

      It's just the process! DNA cannot' be laid down directly, it requires primer.