Join TSR now and get all your revision questions answeredSign up now
    • Thread Starter
    Offline

    2
    ReputationRep:
    So this is the question that i cant do:

    During protein synthesis, tRNA molecules with the anticodon UAG attach to
    the amino acid isoleucine.

    Identify the DNA base triplet which codes for isoleucine.

    I thought that it would be AUC but thats not what the marking scheme says. Please help with an explanation.
    Offline

    1
    ReputationRep:
    it's asking for a DNA triplet not the mRNA triplet so it would be TAG
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by Dickson_Bins)
    it's asking for a DNA triplet not the mRNA triplet so it would be TAG
    But still though, shouldn't A join with T since they are base pairs?
    Offline

    1
    ReputationRep:
    (Original post by flyingpanda786)
    But still though, shouldn't A join with T since they are base pairs?
    Yes but from the tRNA

    tRNA - UAG
    mRNA - AUC
    DNA - TAG
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by Dickson_Bins)
    Yes but from the tRNA

    tRNA - UAG
    mRNA - AUC
    DNA - TAG

    Ahhhhh, that makes soo much sense now, thank you for your help!!
 
 
 
Poll
How are you feeling about your A-level results?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.