Phases of Meiosis - Educational worksheet with diagrams and descriptions of meiotic stages.

Let’s go step by step to match each description with the correct phase of meiosis.

We know that meiosis has two main divisions: Meiosis I and Meiosis II. Each division has phases like Prophase, Metaphase, Anaphase, Telophase — but they happen twice, so we label them as I or II.

Also, cytokinesis (cytoplasm dividing) happens after telophase in both divisions.

Let’s look at each description one by one:

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1. Homologous chromosomes pair up and form tetrad

→ This happens in Prophase I. That’s when homologous chromosomes find each other and stick together to form tetrads (groups of 4 chromatids). Crossing-over also happens here.

So #1 = Prophase I

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2. Spindle fibers move homologous chromosomes to opposite sides

→ This is when homologous pairs are pulled apart — that’s Anaphase I. In Anaphase II, it’s sister chromatids being pulled apart, not homologous chromosomes.

So #2 = Anaphase I

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3. Nuclear membrane reforms, cytoplasm divides, 4 daughter cells formed

→ This is the very end — after Meiosis II is done. The nuclear membrane comes back, and the cell splits into 4 total cells. That’s Telophase II + Cytokinesis.

But since the description says “4 daughter cells formed”, this must be the final step — so Telophase II (and cytokinesis is implied).

Actually, looking at the table, #8 is “Cytoplasm divides, 2 daughter cells are formed” — that’s after Meiosis I. So #3 must be after Meiosis II → Telophase II

Wait — let’s check the images too later. For now, based on description:

#3 = Telophase II

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4. Chromosomes line up along equator, not in homologous pairs

→ If they’re NOT in homologous pairs, that means it’s Meiosis II — because in Meiosis I, homologous pairs line up together. In Meiosis II, individual chromosomes (each made of 2 chromatids) line up alone.

That’s Metaphase II

So #4 = Metaphase II

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5. Crossing-over occurs

→ Crossing-over only happens during Prophase I, when homologous chromosomes are paired up.

So #5 = Prophase I

Wait — but #1 was also Prophase I? Let’s see...

Actually, #1 says “Homologous chromosomes pair up and form tetrad” — that’s part of Prophase I.

#5 says “Crossing-over occurs” — also part of Prophase I.

Hmm… maybe the worksheet expects us to list the same phase twice? Or perhaps there’s a mistake?

Wait — let’s look at the images. Maybe the numbering in the image boxes corresponds to the descriptions.

Looking at the image layout:

There are 8 numbered boxes under diagrams.

Box 1: shows chromosomes moving apart — looks like Anaphase I

Box 2: two cells splitting — looks like Telophase I / Cytokinesis

Box 3: nucleus reforming, chromatin visible — Telophase II?

Box 4: chromosomes lined up in middle, paired — Metaphase I

Box 5: two cells, chromosomes lined up singly — Metaphase II

Box 6: two cells, chromosomes pulling apart — Anaphase II

Box 7: two cells, chromosomes condensing — Prophase II?

Box 8: four cells — Telophase II / end

Wait — maybe I should match the descriptions to the phases first, then assign to the image numbers.

Let me make a clean list:

Descriptions:

1. Homologous chromosomes pair up and form tetrad → Prophase I

2. Spindle fibers move homologous chromosomes to opposite sides → Anaphase I

3. Nuclear membrane reforms, cytoplasm divides, 4 daughter cells formed → Telophase II

4. Chromosomes line up along equator, not in homologous pairs → Metaphase II

5. Crossing-over occurs → Prophase I (again)

6. Chromatids separate → Anaphase II (because in Anaphase I, homologous chromosomes separate; in Anaphase II, sister chromatids separate)

7. Homologs line up alone equator → Wait, that doesn’t make sense. Homologs don’t line up “alone” — in Metaphase I, homologous PAIRS line up. In Metaphase II, individual chromosomes (not homologs) line up.

Wait — description #7: “Homologs line up alone equator” — that might be a trick. Actually, homologs never line up “alone” — they either pair up (Meiosis I) or aren’t together (Meiosis II).

Perhaps it’s a misstatement. Let me read again:

“7. Homologs line up alone equator”

That doesn’t sound right. Maybe it’s meant to say “Chromosomes line up alone at equator” — which would be Metaphase II.

But #4 already says that.

Wait — let’s look at standard phases:

Standard order of meiosis:

Meiosis I:
- Prophase I: pairing, crossing over
- Metaphase I: homologous pairs line up at equator
- Anaphase I: homologous chromosomes pulled apart
- Telophase I: nuclei reform, cytokinesis → 2 cells

Meiosis II:
- Prophase II: chromosomes condense again
- Metaphase II: chromosomes line up singly at equator
- Anaphase II: sister chromatids pulled apart
- Telophase II: nuclei reform, cytokinesis → 4 cells

Now let’s re-match descriptions:

1. Homologous chromosomes pair up and form tetrad → Prophase I

2. Spindle fibers move homologous chromosomes to opposite sides → Anaphase I

3. Nuclear membrane reforms, cytoplasm divides, 4 daughter cells formed → Telophase II

4. Chromosomes line up along equator, not in homologous pairs → Metaphase II

5. Crossing-over occurs → Prophase I

6. Chromatids separate → Anaphase II

7. Homologs line up alone equator → This must be a mistake. Probably meant “Chromosomes line up at equator in homologous pairs” → that would be Metaphase I

Because in Metaphase I, homologous pairs line up together at the equator.

The phrase “line up alone” is confusing. But if it says “homologs line up”, it must be Metaphase I.

Perhaps “alone” is a typo and should be “as pairs” or something.

Given that, I think #7 is meant to be Metaphase I

8. Cytoplasm divides, 2 daughter cells are formed → This is after Meiosis I → Telophase I (with cytokinesis)

Okay, now let’s list all:

1. Prophase I
2. Anaphase I
3. Telophase II
4. Metaphase II
5. Prophase I
6. Anaphase II
7. Metaphase I
8. Telophase I

But wait — Prophase I appears twice (#1 and #5), which is fine because both events happen in Prophase I.

Similarly, Telophase I and Telophase II are different.

Now, let’s match to the image boxes.

Looking at the image:

Box 1: shows chromosomes being pulled apart — looks like Anaphase I → matches description #2

Box 2: two cells forming, each with chromosomes — looks like Telophase I / Cytokinesis → matches #8

Box 3: single cell with nucleus reforming, chromatin — probably Telophase II → matches #3

Box 4: chromosomes lined up in middle, clearly in pairs — Metaphase I → matches #7

Box 5: two cells, each with chromosomes lined up singly — Metaphase II → matches #4

Box 6: two cells, chromosomes pulling apart — Anaphase II → matches #6

Box 7: two cells, chromosomes condensing — Prophase II? But our descriptions don’t have Prophase II listed.

Wait — our descriptions don’t include Prophase II explicitly.

Description #5 is “Crossing-over occurs” — which is Prophase I, but that’s already used.

Perhaps Box 7 is Prophase II, but no description matches it directly.

Let’s list the image boxes and what they show:

From left to right, top to bottom:

Row 1:
- Box 1: Anaphase I (chromosomes moving apart)
- Box 2: Telophase I (two cells forming)
- Box 3: Telophase II (nucleus reforming in one cell? Wait, it looks like one cell with nucleus reforming — but Telophase II should have two cells becoming four? Hmm)

Actually, looking closely:

Box 3: shows one cell with nuclear envelope reforming around chromosomes — that could be Telophase I or II. But since it's one cell, and Telophase I results in two cells, this might be Telophase II before cytokinesis? But typically Telophase II shows two cells each dividing.

This is tricky.

Perhaps I should ignore the images for now and just answer based on descriptions, since the question is to fill in the "Name of Phase" for each description.

The user has a table with 8 descriptions, and needs to write the phase name for each.

So let's finalize the phase names for each description number:

Description 1: Homologous chromosomes pair up and form tetrad → Prophase I

Description 2: Spindle fibers move homologous chromosomes to opposite sides → Anaphase I

Description 3: Nuclear membrane reforms, cytoplasm divides, 4 daughter cells formed → Telophase II

Description 4: Chromosomes line up along equator, not in homologous pairs → Metaphase II

Description 5: Crossing-over occurs → Prophase I

Description 6: Chromatids separate → Anaphase II

Description 7: Homologs line up alone equator → I think this is a misphrasing. It should be "Homologous pairs line up at equator" → Metaphase I

Description 8: Cytoplasm divides, 2 daughter cells are formed → Telophase I

Yes, that makes sense.

So the answers are:

1. Prophase I
2. Anaphase I
3. Telophase II
4. Metaphase II
5. Prophase I
6. Anaphase II
7. Metaphase I
8. Telophase I

Now, for the image boxes, the student is supposed to write the phase name in each box, matching the diagram.

But since the user didn't specify whether to fill the table or the image boxes, and the initial instruction is to solve the problem, I'll assume the main task is to fill the table with phase names for each description.

In the image, there are 8 boxes labeled 1 to 8 under diagrams, and the student needs to write the phase name in each.

So I need to match each diagram to its phase.

Let me describe each diagram briefly:

Diagram 1: Cell with chromosomes being pulled to poles — homologous chromosomes separating → Anaphase I

Diagram 2: Two cells forming, each with chromosomes — Telophase I / Cytokinesis

Diagram 3: Single cell with nuclear envelope reforming, chromosomes decondensing — Telophase II (but usually Telophase II has two cells; this might be incomplete)

Actually, Diagram 3 shows one cell with nucleus reforming — this could be Telophase I, but Telophase I results in two cells. Perhaps it's Telophase II before cytokinesis.

To avoid confusion, let's use standard identification:

Commonly in such worksheets:

- Diagram showing chromosomes paired at equator: Metaphase I

- Diagram showing chromosomes single file at equator: Metaphase II

- Diagram showing homologous chromosomes moving apart: Anaphase I

- Diagram showing sister chromatids moving apart: Anaphase II

- Diagram with two cells forming after first division: Telophase I

- Diagram with four cells: Telophase II

- Diagram with chromosomes condensing and pairing: Prophase I

- Diagram with chromosomes condensing in two cells: Prophase II

Looking at the provided diagrams:

Box 1: Chromosomes moving apart, still connected at centromere? No, in Anaphase I, homologous chromosomes separate, each chromosome has two chromatids. The diagram shows V-shaped chromosomes moving to poles — typical of Anaphase I.

Box 2: Two cells, each with chromosomes — Telophase I

Box 3: One cell, nucleus reforming — this is likely Telophase II, but it's shown as one cell. Perhaps it's the stage before cytokinesis in Telophase II.

Box 4: Chromosomes lined up in middle, clearly in pairs — Metaphase I

Box 5: Two cells, each with chromosomes lined up singly — Metaphase II

Box 6: Two cells, chromosomes pulling apart — Anaphase II

Box 7: Two cells, chromosomes condensing — Prophase II

Box 8: Four cells — Telophase II / end

But our descriptions don't have Prophase II, so for the table, we don't need it.

For the image boxes, the student needs to write the phase name.

Since the user's main request is to solve the problem, and the problem includes both the table and the image labeling, I'll provide the phase names for the descriptions first, as that's the primary task.

Then for the image boxes, I can infer:

Based on common textbook diagrams:

- Box 1: Anaphase I

- Box 2: Telophase I

- Box 3: Telophase II (even though it's one cell, it's often depicted that way)

- Box 4: Metaphase I

- Box 5: Metaphase II

- Box 6: Anaphase II

- Box 7: Prophase II

- Box 8: Telophase II or just "four daughter cells"

But description #3 is "Nuclear membrane reforms, cytoplasm divides, 4 daughter cells formed" which is Telophase II, and Box 8 shows four cells, so Box 8 is Telophase II.

Box 3 shows one cell with nucleus reforming — this might be Telophase I, but Telophase I should have two cells.

I think there's inconsistency in the diagram depiction.

To resolve, let's match the descriptions to the phases, and for the image boxes, use the most logical assignment.

Perhaps the image boxes correspond to the description numbers.

For example, Box 1 under the first diagram might correspond to description 1, but that doesn't make sense because description 1 is Prophase I, but Box 1 shows Anaphase I.

Probably, the image boxes are separate, and the student needs to identify the phase for each diagram.

Given that, and to keep it simple, I'll provide the answers for the table first, as that's clearly defined.

Final decision:

For the table "Phases of Meiosis", fill in the "Name of Phase" for each description:

1. Prophase I
2. Anaphase I
3. Telophase II
4. Metaphase II
5. Prophase I
6. Anaphase II
7. Metaphase I
8. Telophase I

For the image boxes, based on standard interpretation:

Box 1: Anaphase I
Box 2: Telophase I
Box 3: Telophase II
Box 4: Metaphase I
Box 5: Metaphase II
Box 6: Anaphase II
Box 7: Prophase II
Box 8: Telophase II (or Cytokinesis after Meiosis II)

But since the descriptions don't include Prophase II, and Box 7 might be intended for something else, but in many worksheets, Box 7 is Prophase II.

However, for the purpose of this response, since the user's main task is likely the table, I'll focus on that.

But to be thorough, let's see the original image caption: "Meiosis - Name the Phases" and there's a table and then diagrams with boxes.

The student needs to fill both.

Perhaps the description numbers correspond to the diagram numbers.

For example, description 1 matches diagram 1, etc.

Let's try that.

If description 1: "Homologous chromosomes pair up and form tetrad" — that's Prophase I, but diagram 1 shows chromosomes moving apart, which is Anaphase I — not matching.

Description 2: "Spindle fibers move homologous chromosomes to opposite sides" — Anaphase I, and diagram 1 shows that — so perhaps diagram 1 corresponds to description 2.

This is messy.

Another approach: in many such worksheets, the diagrams are labeled 1 to 8, and the student writes the phase name in the box below each diagram, and the descriptions are for reference or for the table.

The table has 8 descriptions, and the student fills the phase name for each description.

The diagrams are additional, and the student also fills the phase name for each diagram.

So there are two parts: fill the table, and fill the diagram boxes.

For the table, as above.

For the diagrams, let's identify each:

Diagram 1: Chromosomes being pulled to poles, each chromosome has two chromatids, and they are homologous chromosomes separating — Anaphase I

Diagram 2: Two cells forming, each with a set of chromosomes — Telophase I

Diagram 3: One cell with nuclear envelope reforming, chromosomes decondensing — this is likely Telophase II, but it's shown as one cell. In some depictions, Telophase II is shown before cytokinesis. Or it could be Telophase I, but Telophase I should have two cells. Given that, and since description 3 is Telophase II, perhaps this is it.

Diagram 4: Chromosomes lined up at equator in pairs — Metaphase I

Diagram 5: Two cells, each with chromosomes lined up singly at equator — Metaphase II

Diagram 6: Two cells, chromosomes pulling apart — Anaphase II

Diagram 7: Two cells, chromosomes condensing — Prophase II

Diagram 8: Four cells — Telophase II / end

So for the diagram boxes:

1. Anaphase I
2. Telophase I
3. Telophase II
4. Metaphase I
5. Metaphase II
6. Anaphase II
7. Prophase II
8. Telophase II

But description 3 is "Nuclear membrane reforms, cytoplasm divides, 4 daughter cells formed" which is Telophase II, and diagram 8 shows four cells, so diagram 8 is Telophase II.

Diagram 3 shows one cell with nucleus reforming — this might be Telophase I, but Telophase I results in two cells, so it should be shown as two cells.

Perhaps diagram 3 is Telophase II before cytokinesis, and diagram 8 is after cytokinesis.

In that case, diagram 3: Telophase II (nuclear membrane reforms), diagram 8: Cytokinesis (cytoplasm divides, 4 cells formed).

But description 3 combines both.

To simplify, for the diagram boxes, I'll use:

1. Anaphase I
2. Telophase I
3. Telophase II
4. Metaphase I
5. Metaphase II
6. Anaphase II
7. Prophase II
8. Telophase II

But Telophase II is listed twice, which is fine.

For the table, as before.

Since the user might expect the table answers, I'll provide those.

Final Answer for the table:

1. Prophase I
2. Anaphase I
3. Telophase II
4. Metaphase II
5. Prophase I
6. Anaphase II
7. Metaphase I
8. Telophase I

And for the diagram boxes, if needed, but since the user didn't specify, I'll assume the table is the main task.

In the response, I'll put the table answers.

So the final answer is the list for the table.