Question on Evolution; SpeciationWatch
Factors involved in this speciation on this tiny island include:
1 - linkage of genes for soil tolerance and flowering time
2 - variation in flowering time
3 - variation of soil tolerance
4 - variation of soil types on the island
What is the correct sequence to explain this speciation?
A. 3 -> 4 -> 1 -> 2
B. 4 -> 3 -> 2 -> 1
Guys, what is the answer and why??
If flowering is dependent on soil type tolerance, then the two different trees will pollinate at different times:
If tree type A likes soil type a, it could bloom in the August.
Tree type B likes soil type b so only grows in that area of the island where that soil type is present, and the variation in flowering means it will bloom at a different time, for example June.
Because the flowering time does not overlap, the trees are reproductively isolated leading to different genetic material over time
Hope that makes sense?
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