Please enable JavaScript.
Coggle requires JavaScript to display documents.
How can the process of evolution by natural selection be modelled? -…
How can the process of evolution by natural selection be modelled?
What is evolution by natural selection?
"Decent with modification"- Charles Darwin
"Survival of the fittest"
organisms with adaptations
Advantage in survival and reproduction
Leads to evolution
E.g. finches with small beaks and big beaks
Leads to beak sizes varying over generations
Natural selection modifies an organism
genetic modification occurring in DNA
Can be positive or negative
Passing down of favourable characteristics
leads to evolution
Can dominate a species
Collectively increases survival and reproduction
E.g. Kangaroos radiating heat
What are the key features of evolution by natural selection?
Key features of evolution= VASRP
Variation
Adaptation
Survival/ Selection
Reproduction
Population changes over time
Selective pressures
Competition
Explain why natural selection is important for populations.
Necessary for a population to evolve
Natural selection is the preservation of favourable traits
Natural selection is the rejection of injurious variations
Important to enhance reproductive success