ANIMAL BEHAVIOR
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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behaviors that use the most stored energy
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behaviors that increase survivorship and decrease reproduction rate
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behaviors that have short-term benefits but long-term costs
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behaviors that increase survivorship and reproduction rate
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Detailed explanation-1: -Selection will favor an altruistic act if the benefit of the act (in terms of indirect fitness) exceeds the cost of the act (in terms of direct fitness). When individuals are more closely related, they have a greater relatedness (r) and altruism is more likely to occur.
Detailed explanation-2: -Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
Detailed explanation-3: -For a trait to undergo positive selection, it must have two characteristics. First, the trait must be beneficial; in other words, it must increase the organism’s probability of surviving and reproducing. Second, the trait must be heritable so that it can be passed to an organism’s offspring.
Detailed explanation-4: -According to Charles Darwin’s theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.