Five fingers of evolution is like having five different ways to grow and change, just like your hand has five fingers that all work together but each can move in its own special way.
Imagine you have a bag of colored marbles, and each marble represents a little change or new trait. Evolution is like picking marbles from the bag one by one, and sometimes you pick more than one at once, that’s how animals get better suited to their environment over time.
How It Works
Think of your hand: if you lose one finger, it's still a hand, but not quite as strong. In evolution, some changes are big like losing a finger, and others are small like the way you bend your wrist.
Paul Andersen explains how these little changes add up over time, like stacking blocks to build a tall tower. Each block is a new trait or change that helps an animal survive better in its home.
Sometimes nature gives animals a big change all at once, like getting wings, but most of the time it's more like learning to ride a bike: little steps and adjustments over time.
Examples
- A simple explanation of how species change over time using five key ideas.
- Understanding the basics of natural selection through a visual model.
Ask a question
See also
- How Does Evo-Ed: History, Genetics Work?
- Why do men have nipples?
- Why did life not evolve to use radio?
- Why is most life symmetrical externally but not Internally?
- What are genetic mutations?