What process is responsible for building successive rock layers on earth?

What is the name of the type of cell division that occurs in the prokaryotic cell cycle

In the practice of science, this type of reasoning is used to develop explanations.

In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna.b) they study alleles that contain genes, which are chromosomes.c) they study chromosomes that contain genes, which are dna segments.