成人论坛

Introduction to evolution

Emmet riding a horse.

explains how the living things on our planet today have slowly developed from simpler life forms that lived millions of years ago. The first person who explained how evolution happens was Charles Darwin with his scientific theory of evolution.

Emmet riding a horse.

Watch: Explaining evolution

Watch an animal evolve over millions of years.

Back to top

Charles Darwin

Emmet the explorer

Charles Darwin observed that although individuals in a shared similarities, they were not exact copies of each other; there were small differences or variations between them. He also noticed that everything in the natural world was competing to survive.

The winners were those which adapted or adjusted their characteristics to increase their chance of survival in the environment they were in. For example, if they were stronger, faster, cleverer or more attractive than others in their species. These living things were more likely to reproduce and pass on their useful characteristics to their offspring.

Individuals that were poorly adapted were less likely to survive and their characteristics were not as likely to be inherited.

Over time, the characteristics that help survival become more common and a species gradually changes. Given enough time, these small changes can add up to the extent that a new species altogether can evolve.

Emmet the explorer
Emmet riding a horse.

Charles Darwin published his scientific theory of natural selection in a book called 鈥極n the Origin of Species鈥 in 1859.

Darwin鈥檚 theory explained how every living thing is connected in a family tree that stretches back billions of years to the beginning of life on Earth.

Back to top

Activity 1: Fill in the gaps

Back to top

Activity 2: Evolution quiz

Back to top

Activity 3: Writing like Charles Darwin

You can learn more about Charles Darwin by watching the clip below and reading these sheets from

Watch: Chares Darwin and Alfred Wallace

Learn more about the work of Charles Darwin and Alfred Wallace

Research Charles Darwin and his discovery.

Pretend you are Charles Darwin living two hundred years ago.

Write a letter to your friend explaining about your 鈥榥ew鈥 theory of evolution.

You could always stain your letter to make it look old using a teabag.

Back to top

Bitesize Primary games. game

Play fun and educational primary games in science, maths, English, history, geography, art, computing and modern languages.

Bitesize Primary games
Back to top

More on Evolution and inheritance

Find out more by working through a topic