SME
Grade 9 Science · Problem type
How one species becomes two
Use this for “Put the steps of speciation after a population is split in order.”
Put in order
Put the steps of speciation in order.
1
?
2
?
3
?
4
?
Assumptions
•
A species is a group whose members can interbreed and have fertile offspring.
•
A barrier stops gene flow, so the two groups change separately over many generations.
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What changes allele frequencies?
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