Enhancer i can stimulate the transcription of gene a, but the insulator blocks its effect on gene

b. enhancer ii can stimulate the transcription of gene b, but the insulator blocks its effect on gene

a. what would be the effect of moving the insulator to a position between enhancer ii and the promoter for gene b?

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings

What percentage of light hits earth's surface directly?