Evolution of new species occurs by mutation and natural selection.
State what is meant by a genetic mutation.
Describe how the process of natural selection can lead to a population of organisms becoming better adapted to their environment over time.
Which scientists independently proposed the theory of evolution by natural selection at around the same time?
Tick (✓\checkmark✓) one box.
- Charles Darwin and Jean-Baptiste Lamarck
- Gregor Mendel and Carl Linnaeus
- Charles Darwin and Alfred Russel Wallace
- Alfred Russel Wallace and Gregor Mendel
The harmless hoverfly and the stinging common wasp both have highly distinct yellow and black striped patterns.
Figure 1 shows a hoverfly and a common wasp.
The wasp has a painful arrow containing venom to defend itself against predators. The hoverfly is completely harmless and does not have a sting. Both insects live in the same woodland and garden habitats.
Explain how having these bright yellow and black stripes helps the harmless hoverfly survive.