A series of forest fires burned through the valleys and most of the established population of butterflies were destroyed. The butterflies had been mostly cream colored with black spots. Some members of the population were cream colored with brown spots. After a few years the population had returned to its previous level but now most of the butterflies are cream with brown spots. Which mechanism of evolution is described in the scenario above?

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

oak trees? ? what was listed

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

i dont know it at allnow im just getting points at this pint