The trp operon of E. coli is regulated by attenuation. If tryptophan levels are high in the cell, . Multiple Choice regions 2

Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated. 1. sporophyte dominance, gametophyte independence 2. sporophyte dominance, gametophyte dependence 3. gametophyte dominance, sporophyte dependence a) 1 → 2 → 3 b) 2 → 3 → 1 c) 2 → 1 → 3 d) 3 → 2 → 1 e) 3 → 1 → 2

What drives an advertising campaign?

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these