Chapter 9, Problem 17A

Summary Introduction

To write:

Correct vocabulary terminthe given concept map.

Introduction:

Cells reproduce by a cycle of growing and dividing called the cell cycle. There are three main stages of a cell cycle; interphase, mitosis and cytokinesis.A cell spends most of the time in interphase. It is the stage in which a cell grows, carries out cellular activities and replicates. The next stage is mitosis in which cell’s nucleus and nuclear material divides. The last stage is cytokinesis in which the cytoplasm of the cell is divided creating a new cell.

Answer to Problem 17A

Anaphase

Explanation of Solution

The second stage in a cell cycle is mitosis in which cell’s nucleus and nuclear material divides. In this stage the replicated genetic material separates and the cell prepares to split into two cells. There are four stages in mitosis; prophase, metaphase, anaphase and telophase.

Anaphase- In this third stage, the chromatids are pulled apart and the microtubules shorten. This separates the sister chromatids into two identical chromosomes. At the end of anaphase, the microtubules with the help of motor proteins move the chromosomes to opposite poles of the cell.