Digital SAT Reading and Writing Practice Question #651

While neo-Darwinian evolutionary theory long posited that random genetic mutations are the sole driver of inherited phenotypic variation, recent research into epigenetics has complicated this view. Biologists have discovered that environmental stressors can alter the methylation patterns of DNA—turning certain genes "on" or "off" without changing the underlying nucleotide sequence. Furthermore, experiments with mice have shown that these environmentally induced epigenetic changes can sometimes be passed down to subsequent generations, a phenomenon that seemingly resurrects Lamarckian concepts of the inheritance of acquired characteristics. Which finding, if true, would most directly support the traditional neo-Darwinian view over the epigenetic alternative described in the text?