UASs Upstream Activating Sequences)are DNase Hypersensitive

Multiple Choice

UASs upstream activating sequences) are DNase hypersensitive.This means that__________ .

A) a UAS is constitutively open
B) each UAS is likely to be single stranded
C) any given UAS is composed of a double- stranded site with a bound repressor
D) each UAS has more histone- binding sites than non- UAS sites
E) more than one strand of DNA exists in each UAS