DNA Double Helix
受众: Middle School类别: Biology
简介
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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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.
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 |
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
Assets & Dependencies
- Fonts: LaTeX / sans-serif
- Manim version: ManimCE 0.19.1
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