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    Hi there,

    Anyone here doing AQA AS Biology? Because if so, I could use a massive favour! Basically, my text book has been nicked by someone at school (thanks for that :rollseyes:) and I desperately need to use some information from the textbook to make a presentation.

    If anyone were kind enough to do so, can someone scan in the pages I need? I would love you forever! I need chapter 15.1, forgotten what it's called, but I specifically need the DNA hybridisation bit which runs onto the next page.

    Thanks so much x
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    Anyone?
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    This?

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    (Original post by should be revising)
    This?

    No.. Nelson Thornes
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    I have this book. I can scan this for you but not yet. Around evening time if that's okay with you?
    What topics do you want?

    EDIT: I' know the topic now ! Sorry aha
    I'll upload it in a couple of hours.
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    (Original post by EffKayy)
    I have this book. I can scan this for you but not yet. Around evening time if that's okay with you?
    What topics do you want?

    EDIT: I' know the topic now ! Sorry aha
    I'll upload it in a couple of hours.
    You're a babe. Thank you Sooner than later would be great though! Life saver.
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    Just revising this today, actually.

    DNA split into two complementary strands, cooled, then heated again- two different specis strands will join together, and then split as temp rises- higher the temp, the more hydrogen bonds, and closer species are together.

    it also has a bit on plants and the three genes they used to construct a phylogenetic tree of 365 plant families.

    Also, serum from species A taken, injected into species B- B will produce antibodies for A's antigens, then serum from B mixed with serum from species C- precipitate formed through B's antibodies reacting with antigens from C similar to A. More anitgens in C similar to A, the more precipitate formed, and close they are related.
 
 
 
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