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Speciation Number Chromosomes Polyploidy Sympatric Require Geographical Isolation

Front Sympatric speciation
Back Doesn't require geographical isolation
Mutations can increase the number of chromosomes (polyploidy)
Individuals with different number of chromosomes cant reproduce and so they become reproductively isolated
If the polyploidy organism reproduces asexually then a new species can emerge
Polyploidy can only lead to speciation if it doesn't prove fatal

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