Belding's ground squirrels give different alarm calls depending on whether the predator is an aerial vs. ground predator. These alarm calls alert other members of their group to the predation threat. What type of selection appears to drive the evolution of ground squirrel alarm calls for aerial predators? Kin selection Reciprocal selection Individual selection Sexual selection None of the above
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Use the following to answer the next questions. Like Belding's ground squirrels, pikas use alarm calls to warn one another about predators. Unlike Belding's ground squirrels, pikas are territorial, and neighbors may or may not be closely related. 1. Another hypothesis is that kin selection has favored alarm calling in pikas. Which of the following observations would provide the best support for this hypothesis? A. Callers are more likely to be targeted and killed by predators. B. Callers remain quiet if their neighbors newer reciprocate by calling. C. Callers are more closely related to their neighbors than non-callers are. D. Callers are more likely to avoid being killed by predators.
Jessica W.
In Belding's ground squirrels, why are females much more likely than males to engage in altruistic behavior by sounding alarm calls? a) Belding's ground squirrels have a sex ratio that is biased toward females. b) Females invest more in foraging and food storage, so they are more likely to lose their lives or their food if a predator attacks. c) Belding's ground squirrels have a sex ratio that is biased toward males. d) Females tend to remain in the area where they were born, so the females that call are warning their own kin. e) Males forage alone, so their alarm calls are useless.
Adi S.
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