How does the idea of niches explain how similar species can coexist with a minimum of competition

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

Agene with the original sequence of atgtt—tact underwent substitution mutation to form atatt—tact after a few generations. tact is a part of a muscle protein encoding region, and atgtt codes for a digestive enzyme. what will be the effect of this mutation? a. the production of muscle protein will be affected. b. the production of digestive enzymes will be affected. c. the production of both the protein and the enzyme will be affected. d. the production of neither the protein nor the enzyme will be affected.

Which of these correctly describes the difference between processes that take place in prokaryotic and eukaryotic cells?