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Biology, 20.11.2019 12:31 MegRasmussen31

Apopulation of animals is split in half by a river. before speciation is completed, the two halves are rejoined when a drought causes the river to run dry. how would this impact the two populations?

a. traits that had developed through mutation would still exist in only one of the halves
b. speciation would still occur because the two halves would be too different genetically to interbreed
c. the two halves would be reproductively isolated
d. gene flow would increase between the two halves, and speciation would not occur

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