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. Over time, the average arm length of the sloth population increased. Which type of natural selection is modeled in the described scenario?

  • A. Stabilizing selection
  • B. Divergent selectoin
  • C. Convergent selection
  • D. Directional selection

Correct Answer: D. Directional selection

Explanation

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