E. coli is grown in a medium containing lactose. If the bacterial culture is irradiated with UV light that causes
laci gene to be nonfunctional, discuss the effect of this
event to the activation of the lac operon.

15 points come and ! which characteristic describes all bacteria? a rod-shaped b microscopic c multicellular d autotrophic

Why do mutations in genes affect traits? o a. genes determine what type of mutagens an organism has. o b. genes produce proteins that cause traits. o c. genes affect how many chromosomes an organism has o d. genes code for carbohydrates that influence traits.

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences