Cell Cycle Coloring Key | PDF - Free Printable

Let’s go step by step to make sure we label and color the cell cycle diagram correctly.

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Step 1: Understand the parts of the cell cycle

The cell cycle has two main parts:
- Interphase (cell grows and copies DNA) → includes G1, S, G2
- M Phase (Cell Division) → includes Mitosis (Prophase, Metaphase, Anaphase, Telophase) + Cytokinesis

From the labels given:

✔ Interphase = G1 + S + G2
✔ M Phase = Mitosis + Cytokinesis
✔ Mitosis = Prophase → Metaphase → Anaphase → Telophase
✔ Cytokinesis = splitting of cytoplasm after mitosis

Also:
- G1 = cell grows
- S = DNA replication
- G2 = prepares for mitosis

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Step 2: Label the diagram sections

Looking at the circular diagram:

Starting from top right and going clockwise:

1. G1 Growth → already labeled ✔️
2. S DNA Replication → already labeled ✔️
3. G2 Prepare for division → already labeled ✔️
4. Then comes Mitosis, which is broken into:
- Prophase
- Metaphase
- Anaphase
- Telophase
5. Then Cytokinesis
6. The whole outer arrow around G1-S-G2 is labeled “Interphase” ✔️
7. The big purple section covering Prophase→Telophase+Cytokinesis is labeled “Cell division (M phase)” ✔️

So all major labels are already written on the diagram — good!

But let’s double-check if any label from the list is missing or misplaced.

List of required labels:
- Anaphase → ✔ in orange section
- Interphase → ✔ green outer arrow
- Mitosis → ✔ part of M phase (orange)
- Cell division (M Phase) → ✔ purple arc
- Interphase → again listed? Maybe typo — but it’s there
- Prophase → ✔
- Cytokinesis → ✔ yellow slice inside M phase
- Interphase S - DNA replication → ✔ labeled as “S DNA Replication”
- G1 – cell grows → ✔
- Metaphase → ✔
- Telophase → ✔
- G2 – prepares for mitosis → ✔

All labels are present and placed correctly.

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Step 3: Coloring instructions

Now follow coloring rules:

> Lightly color:
- G1 phase → BLUE → ✔ done (light blue)
- S phase → YELLOW → ✔ done (yellow)
- G2 phase → RED → ✔ done (pink/red)
- Stages of mitosis → ORANGE → ✔ done (Prophase, Metaphase, Anaphase, Telophase are orange)
- Arrows indicating ALL interphases → GREEN → ✔ outer arrow around G1-S-G2 is green
- Part of arrow indicating MITOSIS → PURPLE → ✔ the big curved arrow over Prophase-Telophase is purple
- Part of arrow indicating CYTOKINESIS → YELLOW → ✔ small arrow next to cytokinesis slice is yellow

Wait — check this last one: “Color the part of the arrow indicating cytokinesis YELLOW.”

In the diagram, there’s a small yellow arrow pointing to “cytokinesis” — that matches.

Also note: The instruction says “color the arrows indicating all of the interphases in GREEN” — that’s the big outer loop around G1-S-G2 → colored green ✔️

And “part of the arrow indicating mitosis PURPLE” — that’s the inner arc over the 4 mitosis stages → colored purple ✔️

“Part of the arrow indicating cytokinesis YELLOW” — there’s a tiny yellow arrow near cytokinesis → looks correct ✔️

One thing: The very bottom large green arrow labeled “Interphase” — that should be green too? But according to instructions, only the *arrows indicating interphases* should be green — and since “Interphase” is made of G1+S+G2, and those are already covered by the outer green arrow, maybe the bottom text doesn’t need an extra arrow colored? Actually, looking closely, the bottom “Interphase” label is under a green arrow that wraps around G1-S-G2 — so yes, that entire outer ring is green → correct.

Also, the center circle says “CELL CYCLE” — no coloring needed.

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Step 4: Final Check

Are all labels applied? Yes.

Are all colors applied per instructions?

- G1 = Blue → ✔️
- S = Yellow → ✔️
- G2 = Red → ✔️
- Mitosis stages = Orange → ✔️
- Interphase arrows = Green → ✔️
- Mitosis arrow = Purple → ✔️
- Cytokinesis arrow = Yellow → ✔️

Everything matches.

No errors found.

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Final Answer:
The diagram is correctly labeled and colored according to the instructions. All phases (G1, S, G2, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis) are properly identified, and colors match: G1=blue, S=yellow, G2=red, mitosis stages=orange, interphase arrows=green, mitosis arrow=purple, cytokinesis arrow=yellow.