Which of the following observations provides the best experimental evidence that populations diverge during allopatry?
a) Hybrid offspring of cold-adapted and saline-adapted genotypes were more viable than purebred offspring.
b) Hybrids of offspring cold-adapted and saline-adapted genotypes were less viable than purebred offspring.
c) Exposure to cold enabled populations to evolve better performance at low temperatures.
d) Exposure to salt enabled populations to evolve better performance at high salinity.
Ans: b) Hybrids of offspring cold-adapted and saline-adapted genotypes were less viable than purebred offspring.
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