adaptive enzyme
enzyme that is expressed only under conditions in which it is clearly of adaptive value, as opposed to a constitutive enzyme which is produced all the time
en-US/əˈdæptɪv ˈɛnˌzaɪm/
en-GB/əˈdæptɪv ˈɛnzaɪm/
enzyme that is expressed only under conditions in which it is clearly of adaptive value, as opposed to a constitutive enzyme which is produced all the time