DNA Double Helix

Description

An animated construction of the DNA double helix, starting from two parallel backbone strands and progressively adding base pairs. The structure then twists into the recognizable double helix and base pairing rules are displayed.

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Phases

#	Phase Name	Duration	Description
1	Title & Setup	3s	Title fades in, background set
2	Backbone Strands	5s	Two vertical lines appear as sugar-phosphate backbones
3	Base Pairs Build	10s	A-T and G-C rungs added one by one with color coding
4	Labels	5s	Base labels appear: Adenine, Thymine, Guanine, Cytosine
5	Twist to Helix	8s	Structure rotates/warps into double helix shape using sinusoidal offset
6	Pairing Rules	7s	MathTex rule equation fades in, arrows point to example pairs
7	Hold	4s	Final display

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Layout

+------------------------------------------------------+
|         DNA Double Helix                             |
|                                                      |
|   Backbone   Base Pairs    Backbone                  |
|      |    A ===== T    |                             |
|      |    G ≡≡≡≡≡ C    |                             |
|      |    T ===== A    |                             |
|      |    C ≡≡≡≡≡ G    |                             |
|      |    A ===== T    |                             |
|      |    G ≡≡≡≡≡ C    |                             |
|                                                      |
|          A=T   G≡C  (pairing rules)                  |
+------------------------------------------------------+

Area Descriptions

• Center column: two vertical backbone lines flanking the rungs
• Rungs: horizontal segments color coded by base type
• Bottom: pairing rules equation in LaTeX

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Assets & Dependencies

• Fonts: LaTeX / sans-serif
• Manim version: ManimCE 0.19.1

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Notes

• A-T pairs: red (A) and yellow (T), single bond (=)
• G-C pairs: green (G) and blue (C), triple bond (≡)
• Helix twist achieved by applying sine offset to x-positions of backbone nodes
• Keep base labels visible throughout