In which situation can natural selection make a trait more common in a population?
Answer and explanation
Correct answer: When the trait gives advantage in survival and reproduction
The governing concept is natural selection, which changes the frequency of heritable variations over generations. If a trait improves an organism’s chances of surviving and reproducing, its bearer may leave more offspring. The trait can therefore become more common, provided it is inherited. Mere body heaviness, lack of inheritance, or equal harm does not provide the selective advantage required, so option A is correct.
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What is the correct answer to this question?
When the trait gives advantage in survival and reproduction
Why is this the correct answer?
The governing concept is natural selection, which changes the frequency of heritable variations over generations. If a trait improves an organism’s chances of surviving and reproducing, its bearer may leave more offspring. The trait can therefore become more common, provided it is inherited. Mere body heaviness, lack of inheritance, or equal harm does not provide the selective advantage required, so 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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