Researcher measured the snout-to-vent (mouth to anus) length…
Researcher measured the snout-to-vent (mouth to anus) length of Galápagos marine iguanas and observed the percent survival of different-sized animals, all of the same age. The graph shows the log snout-vent length (SVL, a measure of overall body size) plotted against the percent survival of these different size classes for males and females. Examine following figure/graph. What type of selection for body size appears to be occurring in these marine iguanas?
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