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8 Cards in this Set

  • Front
  • Back
What is variation?
Variation is the differences between the members of a species
What is a mutation?
A mutation is a change in the amount or structure of DNA
What does a mutated gene form?
A recessive allele
What are mutagens?
Mutagens are agents which cause DNA mutation
What is evolution?
Evolution is the change from one species to another by natural selection over long periods of time
What are the observations put forward in the theory of natural selection?
Organisms overbreed, Population numbers remain static, Inherited variations arise.
What are the conclusions that can be draw from the theory of natural selection?
There is a struggle for existance, Those organisms that adapt will survive (survival of the fittest)
What 3 areas provide evidence for evolution?
Fossil records, comparative anatomy, study of embreos