Inheritance & EvolutionIntroduction

The Story: The Survival of the Fittest

Part of Evolution — GCSE Biology

This introduction covers The Story: The Survival of the Fittest within Evolution for GCSE Biology. Theory of evolution, natural selection, and evidence for evolution It is section 1 of 12 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 1 of 12

Practice

26 questions

Recall

25 flashcards

The Story: The Survival of the Fittest

Charles Darwin spent 5 years on HMS Beagle, observing nature. He noticed that individuals vary, and those with advantages survive better and reproduce more. Over generations, this leads to evolution — gradual change in species. His idea was controversial in 1859 but is now the foundation of biology!

Keep building this topic

Read this section alongside the surrounding pages in Evolution. That gives you the full topic sequence instead of a single isolated revision point.

Natural Selection — Step by Step Evidence for Evolution Example: Antibiotic Resistance

Practice Questions for Evolution

What is evolution?

A. The gradual change in living organisms over time
B. The growth of an individual organism
C. Animals moving to different habitats
D. The creation of new organisms from nothing

1 markfoundation

Describe three pieces of evidence that support Darwin's theory of evolution.

4 marksstandard

Quick Recall Flashcards

What is the main idea behind natural selection?

The process by which individuals with advantageous characteristics are more likely to survive and reproduce, leading to gradual change in species over time.

What is the analogy between natural selection and the video game respawn system?

In a multiplayer game, players with advantageous traits survive and respawn, leading to their increased representation in subsequent rounds, much like how natural selection favors certain characteristics in an organism.

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Evolution

Natural Selection — Step by Step