MCAT Question of the Day
    •

    Q:

    		 An ultra-conserved element is a genetic sequence that does not change in at least two different species, often in distantly-related species. Where are these elements most likely to be found?
    		 

    A

    		 catalytic regions of metabolic enzymes

    B

    		 binding regions cell surface proteins

    C

    		 DNA-binding regions of transcription factors

    D

    		 non-catalytic regions of digestive enzymes



    Protein Structure and Function | Evolution |
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