To solve this problem, we need to identify the stages of mitosis in the provided diagrams. Mitosis is a process of cell division that results in two genetically identical daughter cells. The stages of mitosis are:
1.
Interphase: The cell is not actively dividing but is preparing for division by growing and duplicating its DNA.
2.
Prophase: Chromosomes condense and become visible; the nuclear envelope breaks down.
3.
Metaphase: Chromosomes align at the metaphase plate (equatorial plane) in the center of the cell.
4.
Anaphase: Sister chromatids separate and move to opposite poles of the cell.
5.
Telophase: Chromosomes reach the poles, the nuclear envelope reforms, and the cell begins to divide.
Step-by-Step Analysis of the Diagrams
####
Interphase
- During interphase, the chromosomes are not condensed and appear as thin threads or are not visible.
- Look for cells where the nucleus appears intact and the chromosomes are not clearly defined.
From the diagram:
- Cells
5,
8,
10,
13,
16, and
18 show nuclei without condensed chromosomes, indicating they are in interphase.
####
Prophase
- In prophase, the chromosomes condense into visible structures, and the nuclear envelope begins to break down.
- Look for cells where the chromosomes are starting to condense but are not yet fully aligned.
From the diagram:
- Cells
1,
7,
9,
11,
14, and
17 show chromosomes beginning to condense, indicating they are in prophase.
####
Metaphase
- In metaphase, the chromosomes are fully condensed and aligned at the metaphase plate (equatorial plane).
- Look for cells where the chromosomes are clearly aligned in the center of the cell.
From the diagram:
- Cells
2,
4,
12, and
15 show chromosomes aligned at the center, indicating they are in metaphase.
####
Anaphase
- In anaphase, the sister chromatids separate and move toward opposite poles of the cell.
- Look for cells where the chromosomes are moving apart and are no longer aligned at the center.
From the diagram:
- Cells
3,
6,
19, and
20 show chromosomes separating and moving toward opposite poles, indicating they are in anaphase.
####
Telophase
- In telophase, the chromosomes have reached the poles, the nuclear envelope reforms, and the cell begins to divide.
- Look for cells where the chromosomes are at the poles and the nuclear envelope is reforming.
From the diagram:
- Cells
21,
22,
23, and
24 show chromosomes at the poles and the nuclear envelope reforming, indicating they are in telophase.
Final Answer
Based on the analysis:
-
Interphase: 5, 8, 10, 13, 16, 18
-
Prophase: 1, 7, 9, 11, 14, 17
-
Metaphase: 2, 4, 12, 15
-
Anaphase: 3, 6, 19, 20
-
Telophase: 21, 22, 23, 24
Thus, the final answer is:
\[
\boxed{
\begin{array}{ll}
\text{Interphase:} & 5, 8, 10, 13, 16, 18 \\
\text{Prophase:} & 1, 7, 9, 11, 14, 17 \\
\text{Metaphase:} & 2, 4, 12, 15 \\
\text{Anaphase:} & 3, 6, 19, 20 \\
\text{Telophase:} & 21, 22, 23, 24 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of onion cell mitosis worksheet answers.