Answer Expert Verified. What MUST occur before mitosis and meiosis can occur is B) DNA replication. … Before mitosis, the genetic material of the mother cell must duplicate so that each daughter cell have the same amount as the mother cell. On the other hand, meiosis is a reductive division.
What must happen before mitosis or meiosis occurs?
Before cells can divide, either through mitosis or meiosis, they must go through interphase. In interphase, the contents of the cell double.
What must happen before mitosis occurs?
Before a cell can enter the active phases of mitosis, however, it must go through a period known as interphase, during which it grows and produces the various proteins necessary for division.
Which process must occur before mitosis and meiosis can occur quizlet?
Which process MUST occur before mitosis and meiosis can occur? the final phase of cell division, between anaphase and interphase, in which the chromatids or chromosomes move to opposite ends of the cell and two nuclei are formed.
What happens in a cell before meiosis begins?
Before meiosis begins, some important changes take place within the parent cells. First, each chromosome creates a copy of itself. These duplicated chromosomes are known as sister chromatids. They are fused together and the point where they are joined is known as the centromere.
What must occur before meiosis can begin?
Before entering meiosis I, a cell must first go through interphase. This is the same interphase that occurs before mitosis. The cell grows, copies its chromosomes and prepares for division during the G 1start subscript, 1, end subscript phase, S phase, and G 2start subscript, 2, end subscript phase of interphase.