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Assume Aug1 and Aug2 regulate the expression of the Url1 and Url2 genes. Which gene is...

Assume Aug1 and Aug2 regulate the expression of the Url1 and Url2 genes. Which gene is a cis-regulatory element? Activator? repressor?

Genotype:                                                                                 Url2 expression:

aug1- aug2+ url1- url2+/aug1+ aug2- url1+ url2-                       Inducible

aug1+ aug2- url1- url2+ / aug1+. aug2+ url1+ url2-                    Constitutive

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