In which situation can natural selection make a trait more common?
Answer and explanation
Correct answer: When the trait helps the organism survive and reproduce in its environment
Natural selection changes the frequency of heritable variations when environmental conditions give some individuals a survival or reproductive advantage. Individuals with a beneficial inherited trait are more likely to survive, reproduce, and pass its alleles to their offspring. Over generations, the trait can therefore become more common in the population. A weakness, a non-heritable scar, or a trait not transmitted through reproductive cells will not explain this process. Option A is correct.
Frequently asked questions
What is the correct answer to this question?
When the trait helps the organism survive and reproduce in its environment
Why is this the correct answer?
Natural selection changes the frequency of heritable variations when environmental conditions give some individuals a survival or reproductive advantage. Individuals with a beneficial inherited trait are more likely to survive, reproduce, and pass its alleles to their offspring. Over generations, the trait can therefore become more common in the population. A weakness, a non-heritable scar, or a trait not transmitted through reproductive cells will not explain this process. Option A is correct.
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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