B15.4 Speciation Flashcards
1
Q
What did Alfred Wallace do ?
A
Worked on natural selection at the same time as Darwin which prompted Darwin to publish his book ‘on the origins of species’
He later worked on the theory of speciation
2
Q
What is a species ?
A
A group of similar organisms that can reproduce to give fertile offspring
3
Q
What is speciation ?
A
The formation of a new species
4
Q
What are the steps of speciation ?
A
Variation within population due to random genetic mutation
Population becomes isolated due to geographical barriers
Natural selections occurs
Different traits/ alleles become more frequent within the population
Over time the 2 populations will change so much that they no longer can re produce fertile offspring
