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Speciation and Genes
Speciation is a process where evolution leads to a new species
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Speciation has two stages:
1
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This happenswhen
changes in the environment, caused by floods, earthquakes or formation of mountains,
create a physical 'barrier' that geographically isolates individuals from the main
population
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21
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For examplethey may have
different climates
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Eventually, the individuals from each population change so much that they are unable to
breed with each other to produce fertile offspring
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The diagrams below show the stages of speciation
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1
e
A new species
develops
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3
There ere two populations
of the same species
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2