The modern theory of evolution states that a basis for variation within a species is provided by mutations. It plays an important role in evolution. The best source of all genetic variation is mutation. It is important as the first step of evolution<span> because it creates a new DNA sequence for a particular gene, creating a new allele.</span>
Answer:1. Get a Clean slide,Put 1 drop of water on the slide 2. put your speciem on the clean slide 3. put the Cover slip over your specim 4. look under microcope!
Explanation:
Answer:
2
Explanation: GPCRs are a large family of cell surface receptors that respond to a variety of external signals. Binding of a signaling molecule to a GPCR results in G protein activation, which in turn triggers the production of any number of second messengers.