Biology Topic Practice
Speciation and Isolation
Speciation is the formation of a new species due to a population becoming isolated.
What can cause a population to become geographically isolated?
What is Speciation and Isolation?
"Speciation is the evolutionary process by which populations evolve to become distinct species."
Question 1
What is evolution?
Question 2
Which statement best describes natural selection?
Question 3
What is speciation?
Making New Species
A population is separated by a physical barrier (e.g., a mountain or ocean).
Natural selection works differently in the two environments.
Over time, they become so different they can no longer interbreed (the definition of a species).
Exam Tip
Alfred Russel Wallace worked with Darwin and provided early evidence for speciation.
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