Darwin and Wallace (Edexcel GCSE Biology): Flashcards
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Scientist who proposed the theory of evolution
Scientist who proposed the theory of evolution
Charles Darwin
Year 'On the Origin of Species' was published
Year 'On the Origin of Species' was published
1859
Cause of variation within species
Cause of variation within species
Mutations in DNA
Natural selection (survival of the fittest) meaning
Natural selection (survival of the fittest) meaning
Organisms best suited to environment survive, reproduce & pass on advantageous traits
Definition of alleles
Definition of alleles
Versions of a gene
Religious reason Darwin's theory faced resistance
Religious reason Darwin's theory faced resistance
Challenged belief that God created all species as they are
Lamarck's hypothesis on trait inheritance
Lamarck's hypothesis on trait inheritance
Traits acquired in lifetime passed to offspring
Why Lamarck's theory was refuted
Why Lamarck's theory was refuted
Only genetic info in sex cells is inherited
Scientist who developed natural selection independently
Scientist who developed natural selection independently
Alfred Russel Wallace
How Darwin & Wallace published their theory
How Darwin & Wallace published their theory
Together, acknowledging each other's work
Wallace's observation about warning colours
Wallace's observation about warning colours
Species use them to deter predators (e.g. butterflies)
What all life has descended from
What all life has descended from
A common ancestor
How evolution changed classification of organisms
How evolution changed classification of organisms
Classify by how closely related they are
Why finish antibiotic course (evolution link)
Why finish antibiotic course (evolution link)
To prevent resistant bacteria evolving
Why genetic diversity important in populations
Why genetic diversity important in populations
Helps populations adapt to changing environments