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This served to blend the edges of the stimuli chromatically with the background, while retaining uniform color saturation in the middle. Two types of stimuli were presented randomly on each side (left and right). One stimulus was designated as the standard while the other was the test ...
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Background Adaptation to different ecological environments is thought to drive ecological speciation. This phenomenon culminates in the radiations of cichlid fishes in the African Great Lakes. Multiple characteristic traits of cichlids, targeted by natural or sexual selection, are considered among the dri...
document.webkitHidden : document.hidden; if (isHidden) { document.removeEventListener('visibilitychange', visiChangecb); isOnceHidden = true; } }; // 由于在部分ipad上调起地图时,isHidden也为false;但是在visibilitychange事件里有时能得到正确的isHidden,有时也一直为false; // 为了提高准确性,通过...
Background A key question in evolutionary biology is whether the genetic basis of adaptations in macroevolution is the same as those of microevolution. This issue has been difficult to address since the different timescales involved lead to different methods of analysis, with population genetics being...