Question

An enlarged right ventricle both increases oxygen intake and the risk of pulmonary hypertension. How can natural selection result in an adaption that produces both positive and negative effects?(1 point)ResponsesThe negative effects appear later in life in certain environments.The negative effects appear later in life in certain environments.The positive effects outweigh the negative effects in certain environments.The positive effects outweigh the negative effects in certain environments.The negative effects appear before reproductive age in certain environments.The negative effects appear before reproductive age in certain environments.The positive effects appear after reproductive age in certain environments.

Answer 1

The best response to the question is: The positive effects outweigh the negative effects in certain environments.

This option suggests that in specific environments, the advantages provided by an enlarged right ventricle (such as increased oxygen intake) can be significant enough to offset the negative consequences (like the risk of pulmonary hypertension), leading to a net positive effect on survival and reproduction within those contexts. Natural selection can thus favor traits that may have both positive and negative consequences depending on environmental conditions.