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Card 14 / 112: While on a local tour of undisturbed rainforest in Costa Rica you notice that the spider monkeys have unusually long arms that help them make their way through the trees with great agility and speed. Determine which explanation below best fits Charles Darwin's theory of natural selection.
A)
Over their lifetime, the individual spider monkeys that grew longer arms became faster and then passed this trait onto their offspring
B)
There was a large catastrophe in the past, and those organisms with longer arms survived and reproduced.
C)
Over many generations, those individuals that possessed longer arms were more successful in reproducing; therefore, the trait was passed on through the generations.
D)
Over many generations, individuals grew longer arms and then passed that trait onto their offspring.
Answer:
C) Over many generations, those individuals that possessed longer arms were more successful in reproducing; therefore, the trait was passed on through the generations.
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Attribution:
Olivia D'Ambrogio Introduction to Evolutionary Biology and Ecology. (The Saylor Academy 2014), http://www.saylor.org/courses/bio102/ (Accessed 16 May, 2014). License: Creative Commons BY-NC-ND
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