GCSE Science Fold Solve Evolution Fold the answers

GCSE Science Fold & Solve – Evolution Fold the answers and work through the questions below. 1 AO 1. Darwin suggested theory of evolution by ______ selection. 2. Darwin’s theory of evolution says that all species of living things have evolved from _____ forms. 3. State two reasons why Darwin’s ideas were not accepted at first. 4. What is a mutation? 2 AO 1. Describe the process of natural selection. 2. There are many different species of bird on the Earth today. Describe how these different species may have evolved from an ancestor such as Archaeopteryx 3 AO 5. Define a fossil. The photograph shows the fossilised skeleton of Tiktaalik and a model of what scientists think Tiktaalik looked like. 1. Scientists think that Tiktaalik lived mostly in water, but that it was one of the first animals to be able to move onto land. Use evidence from the photograph to suggest why. Answers – Fold this over! AO 1 1. Natural 2. Simple 3. Religion/Insufficient evidence/DNA not known/ 4. A change in a gene. 5. Remains of an organism/ from many years ago (>1000 years) AO 2 1. • There is variation (between members of a species) • Caused by a mutation • better adapted survive • reproduce and pass on (favourable) allele(s) / gene(s) / mutation(s) / DNA / genetic material. 2. • separation / isolation (of different populations) • different environmental conditions (between locations) • mutation(s) occur or genetic variation (within each population) • better adapted survive or natural selection occurs • favourable alleles passed on (in each population) • eventually different populations unable to breed successfully with each other AO 3 1.