A population of sloths lives in a forest. New trees start to take over the...
BIOLOGYSAT 2021
A population of sloths lives in a forest. New trees start to take over the forest, and these new trees make it easier for sloths with longer arms to climb them. The sloths with longer arms survive longer and produce more offspring than their shorter-armed counterparts. The sloths with the shortest arms die quickly and do not produce many offspring. What can you predict will happen to the average arm length of the sloths in this population over time?
- A. The average arm length of sloths in this population will increase.
- B. The average arm length of sloths in this population will decrease.
- C. The average arm length of sloths in this population will decrease and then increase.
- D. The average arm length of sloths in this population will stay the same.
Correct Answer: A. The average arm length of sloths in this population will increase.
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