Natural Selection
対象: High Schoolカテゴリ: Biology
説明
A visual simulation of natural selection showing a population of bugs on a background. Camouflaged bugs survive while conspicuous bugs are removed by predators. Over three generations the population frequency shifts toward the camouflaged trait, tracked by a live bar chart.
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Natural Selection
Description
A visual simulation of natural selection showing a population of bugs on a background. Camouflaged bugs survive while conspicuous bugs are removed by predators. Over three generations the population frequency shifts toward the camouflaged trait, tracked by a live bar chart.
Phases
| # | Phase Name | Duration | Description |
|---|---|---|---|
| 1 | Setup | 4s | Title, background (brown/green), initial mixed population appears |
| 2 | Generation 1 — Selection | 7s | Conspicuous (bright) bugs get crossed out/removed by predator strikes |
| 3 | Generation 1 — Bar Chart | 4s | Bar chart updates showing ratio shift |
| 4 | Generation 2 — Reproduction | 5s | Surviving bugs reproduce, new population shown with fewer bright bugs |
| 5 | Generation 2 — Selection | 5s | Another round of predation removes remaining conspicuous bugs |
| 6 | Generation 3 — Bar Chart | 4s | Bar chart shows dominance of camouflaged trait |
| 7 | Generation 3 — Population | 4s | Final population mostly camouflaged bugs |
| 8 | Conclusion | 4s | Label: "Natural selection favors camouflage" |
Layout
+------------------------------------------------------+
| Natural Selection |
| |
| [Background environment — brown/green] |
| [Bugs scattered: some brown (camo), some red (vis)] |
| |
| [Bar chart — right side] |
| Gen1: ████ camo ██ conspicuous |
| Gen2: ██████ camo █ conspicuous |
| Gen3: ████████ camo conspicuous=0 |
+------------------------------------------------------+
Area Descriptions
- Left/center: environment with scattered bugs
- Right: bar chart updating each generation
- Bottom: generation label and selection pressure explanation
Assets & Dependencies
- Fonts: LaTeX / sans-serif
- Manim version: ManimCE 0.19.1
Notes
- Camouflaged bugs: brown circles matching the background
- Conspicuous bugs: bright red/orange circles
- Predator strike: red X animation over the bug, then bug fades
- Bar chart uses Rectangle objects that grow with ValueTracker
- Three generations clearly labeled