APFIVE A group of scientists studying speciation introduces a physical barrier in the habitat of a lizard species to observe the effects of geographic isolation on evolution. They monitor the lizards for several generations but do not observe significant differences in the traits of the two populations. The scientists did not account for gene flow between the populations due to occasional breaches in the barrier. What was the conceptual mistake in this study?
Overlooking the possibility that the lizards might not have enough genetic variability for significant evolutionary divergence.
Underestimating the importance of completely preventing gene flow to observe the effects of allopatric speciation.
Assuming that physical barriers are the only factor necessary to drive significant evolutionary changes in a population.
Ignoring the potential for non-physical barriers, such as behavioral differences, to contribute to reproductive isolation.
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