If two populations live in different environments, why can different traits increase in them?
Answer and explanation
Correct answer: Each environment can make different traits useful.
Natural selection depends on the interaction between existing variation and environmental conditions. Different environments present different challenges, such as temperature, food availability, predators or disease. A trait that improves survival or reproduction in one environment may provide little benefit, or even a disadvantage, in another. Over generations, selection can therefore increase different heritable traits in the two populations. Hence option A is correct; the other options deny variation or misunderstand selection.
Frequently asked questions
What is the correct answer to this question?
Each environment can make different traits useful.
Why is this the correct answer?
Natural selection depends on the interaction between existing variation and environmental conditions. Different environments present different challenges, such as temperature, food availability, predators or disease. A trait that improves survival or reproduction in one environment may provide little benefit, or even a disadvantage, in another. Over generations, selection can therefore increase different heritable traits in the two populations. Hence option A is correct; the other options deny variation or misunderstand selection.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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