A population of insects has a brown color, providing them with camouflage on the desert sands where they live. Over thousands of years, climate changes in the area cause grasses to grow, and the population of insects becomes green over the same period of time. Which term describes what has taken place in the population of insects? a. mutation
b. evolution
c. migration
d. variation

B.

Explanation:

Evolution is a change in the gene pool of a population over time. It occurs throughout the whole population. The gene pool in this situation changes from consisting of genes for mostly brown-colored insects to green. Mutation only occurs in individuals. Migration refers to population moving locations. Variation is just the different genes in a gene pool.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

tissue

explanation:

it is actually formed by geoup of cells which is tissue