Which of the following must occur before mitosis can begin? A. DNA must be replicated in the nucleus

B. Chromosome must move to the center of the nucleus.

C. Chromosomes must attach to the cell membrane.

D. Ribosomes must move to opposite sides of the cell.

In order for mitosis to begin, DNA must be replicated in the nucleus.

Mitosis is known as equational division and results in daughter cells with the same ploidy as the parent cell.

Thus, in order for the two daughter cells to have the same ploidy level as the parent cell, the DNA of the parent cell has to first double before mitosis will begin.

Once the DNA of the parent cell has been doubled, mitosis can then proceed and each daughter cell will get a portion of the DNA each in their nuclei.

More on mitosis can be found here: link

A. DNA must be replicated in the nucleus

Explanation:

Mitosis is a cell division in which two daughter cells, which are genetically identical to one another, are produced. Mitosis is key to the growth and development of every cell as it is the way cells multiply in a living organism.

However, before the commencement of the mitotic process or any division, the genetic material present in that cell must be duplicated in a process called DNA REPLICATION. DNA replication is the process whereby DNA on the chromosome is doubled in content in order for each resulting daughter cell to possess the same and correct number of chromosomes.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

cuz he is really really short, assuming an unorthodox and inherently unlucky configuration of elevator buttons…

explanation: