2 Responses

  1. Your website is great!
    I’m very happy that you allow me and others than your students to share your science videos, power points etz.
    I just was reading your PP for Genetic engineering etz and I think that the eample on picture 11 Q. 1 should be IV, not I.
    I really hope you will continue with this website.
    It must be very time demanding, but it is really useful.
    Sincerely
    Britta Fardig Bergstrom

  2. Hi Britta – you are right! The smallest fragment gets pushed further from the origin, so it should be IV – I’ll correct it now. Silly mistake. Thanks for letting me know.

    Good luck!

    Steve.

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