For Galápagos Marine Iguanas, Body Size Is Not Correlated with Survival

For Galápagos marine iguanas, body size is not correlated with survival, but small iguanas can sprint faster than large iguanas. If a new predator species e.g., cats) that preferably catches and eats slower iguanas is introduced to the island, iguana body size is likely to in the absence of other factors; the iguanas would then be under selection.

A) increase; directional
B) decrease; directional
C) stay the same; stabilizing
D) decrease; stabilizing
E) increase; disruptive

Correct Answer:

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