Start with the image in #4 and end with the image | Chegg.com - Free Printable
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Step-by-step solution for: Start with the image in #4 and end with the image | Chegg.com
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Show Answer Key & Explanations
Step-by-step solution for: Start with the image in #4 and end with the image | Chegg.com
The task involves arranging the images of different phases of mitosis in their correct sequential order. Mitosis is a process of cell division that results in two genetically identical daughter cells. The phases of mitosis are:
1. Prophase: Chromosomes condense and become visible, the nuclear envelope breaks down, and the mitotic spindle begins to form.
2. Prometaphase: Chromosomes attach to the spindle fibers via their kinetochores, and the nuclear envelope completely disintegrates.
3. Metaphase: Chromosomes align at the metaphase plate (equatorial plane) with their kinetochores attached to spindle fibers from opposite poles.
4. Anaphase: Sister chromatids separate and are pulled toward opposite poles by the spindle fibers.
5. Telophase: Chromosomes reach the poles, decondense, and new nuclear envelopes form around each set of chromosomes.
6. Cytokinesis: The cytoplasm divides, resulting in two separate daughter cells.
#### 1. Identify Prophase (Phase 11):
- Chromosomes begin to condense and become visible.
- The nuclear envelope is still intact but starting to break down.
- Spindle fibers are beginning to form.
#### 2. Identify Prometaphase (Phase 6):
- Chromosomes are more condensed and have kinetochores attached to spindle fibers.
- The nuclear envelope is breaking down further.
- Chromosomes are moving toward the center of the cell.
#### 3. Identify Metaphase (Phase 8):
- Chromosomes are fully aligned at the metaphase plate (equatorial plane).
- Kinetochores are attached to spindle fibers from opposite poles.
- The nuclear envelope is completely gone.
#### 4. Identify Anaphase (Phase 10):
- Sister chromatids separate and are being pulled toward opposite poles by the spindle fibers.
- Each chromatid is now considered a chromosome.
#### 5. Identify Telophase (Phase 9):
- Chromosomes have reached the poles and begin to decondense.
- New nuclear envelopes are forming around each set of chromosomes.
- The spindle apparatus is breaking down.
#### 6. Identify Cytokinesis (Phase 3):
- The cytoplasm is dividing, resulting in two separate daughter cells.
- Each daughter cell has its own nucleus and set of chromosomes.
The correct sequence of the phases of mitosis based on the provided images is:
11 → 6 → 8 → 10 → 9 → 3
- Phase 1: This image shows a cell in interphase, where chromosomes are not yet condensed, and the nuclear envelope is intact. It is not part of mitosis.
- Phase 2: This image shows a cell undergoing cytokinesis, similar to Phase 3 but at a later stage. It can be grouped with Phase 3.
- Phase 4: This image shows a cell in prophase or prometaphase, similar to Phase 11 or 6.
- Phase 5: This image shows a cell in late prophase or early prometaphase, similar to Phase 11.
- Phase 7: This image shows two daughter cells after cytokinesis, similar to Phase 3.
- Phase 12: This image shows a cell in interphase, where chromosomes are not yet condensed, and the nuclear envelope is intact. It is not part of mitosis.
$$
\boxed{11, 6, 8, 10, 9, 3}
$$
1. Prophase: Chromosomes condense and become visible, the nuclear envelope breaks down, and the mitotic spindle begins to form.
2. Prometaphase: Chromosomes attach to the spindle fibers via their kinetochores, and the nuclear envelope completely disintegrates.
3. Metaphase: Chromosomes align at the metaphase plate (equatorial plane) with their kinetochores attached to spindle fibers from opposite poles.
4. Anaphase: Sister chromatids separate and are pulled toward opposite poles by the spindle fibers.
5. Telophase: Chromosomes reach the poles, decondense, and new nuclear envelopes form around each set of chromosomes.
6. Cytokinesis: The cytoplasm divides, resulting in two separate daughter cells.
Step-by-Step Solution:
#### 1. Identify Prophase (Phase 11):
- Chromosomes begin to condense and become visible.
- The nuclear envelope is still intact but starting to break down.
- Spindle fibers are beginning to form.
#### 2. Identify Prometaphase (Phase 6):
- Chromosomes are more condensed and have kinetochores attached to spindle fibers.
- The nuclear envelope is breaking down further.
- Chromosomes are moving toward the center of the cell.
#### 3. Identify Metaphase (Phase 8):
- Chromosomes are fully aligned at the metaphase plate (equatorial plane).
- Kinetochores are attached to spindle fibers from opposite poles.
- The nuclear envelope is completely gone.
#### 4. Identify Anaphase (Phase 10):
- Sister chromatids separate and are being pulled toward opposite poles by the spindle fibers.
- Each chromatid is now considered a chromosome.
#### 5. Identify Telophase (Phase 9):
- Chromosomes have reached the poles and begin to decondense.
- New nuclear envelopes are forming around each set of chromosomes.
- The spindle apparatus is breaking down.
#### 6. Identify Cytokinesis (Phase 3):
- The cytoplasm is dividing, resulting in two separate daughter cells.
- Each daughter cell has its own nucleus and set of chromosomes.
Final Order:
The correct sequence of the phases of mitosis based on the provided images is:
11 → 6 → 8 → 10 → 9 → 3
Explanation of Other Images:
- Phase 1: This image shows a cell in interphase, where chromosomes are not yet condensed, and the nuclear envelope is intact. It is not part of mitosis.
- Phase 2: This image shows a cell undergoing cytokinesis, similar to Phase 3 but at a later stage. It can be grouped with Phase 3.
- Phase 4: This image shows a cell in prophase or prometaphase, similar to Phase 11 or 6.
- Phase 5: This image shows a cell in late prophase or early prometaphase, similar to Phase 11.
- Phase 7: This image shows two daughter cells after cytokinesis, similar to Phase 3.
- Phase 12: This image shows a cell in interphase, where chromosomes are not yet condensed, and the nuclear envelope is intact. It is not part of mitosis.
Final Answer:
$$
\boxed{11, 6, 8, 10, 9, 3}
$$
Parent Tip: Review the logic above to help your child master the concept of phases of mitosis worksheet.