Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

Exercise 6

Enhancers. An enhancer may increase the frequency of transcription initiation for its associated gene when... (Indicate true or false for each statement, and explain your answer.)
(a)... it is located 1000 nucleotides upstream of the gene's core promoter.
(b)... it is in the gene's coding region.
(c)... no promoter is present.
(d)... it causes looping out of the intervening DNA.
(e)... it causes alternative splicing of the DNA.