topic 4- evolution (biology)
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13 Terms
What is the definition of natural selection?
Individuals with beneficial traits survive and reproduce
What are the requirements for natural selection?
Variation
Inheritance
Competition
Selection pressure
What is the definition of evolution?
The change in allele frequency overtime
What is the definition of a species?
A group able to interbreed and produce fertile offspring
What do fossil records show?
A gradual change over time
What are homologous structures?
Same structures but different functions
What are analogous structures?
Different structures, but same function
What is meant by convergent evolution?
Where similar traits evolve independently
What is meant by divergent evolution?
Where species become more different
What is the definition of speciation?
The formation of new species
What is meant by allopatric speciation?
Speciation that occurs due to geographic isolation
What is meant by Sympatric speciation?
Speciation that occurs even though there is no geographic separation
What are the types of reproductive isolation?
behavioural
Temporal
Mechanical
Gametic
