How does a new species arise and what are the four main stages?
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- Thread Starter
- 10-02-2018 13:28
- 10-02-2018 17:22
Speciation is the term used when a new species is created:
1) Isolation - a barrier eg. Mountain splits one population of a species into two populations.
2) mutation - different mutations occur in each population
3) selection - due to different selection pressures in the populations, different mutations are advantageous and passed to offspring.
4) time - after time has passed, mutations have been passed on to the next generations and the two populations have evolved into two different species - they can no longer breed to produce fertile offspring.
Hope this helps