If a useful trait is not heritable, why can natural selection not spread it permanently in a population?
Answer and explanation
Correct answer: Because it will not regularly pass to offspring
Natural selection changes population frequencies when advantageous variations are inherited and passed through reproduction. A non-heritable useful trait may help one individual, but its offspring will not consistently receive the genetic basis for that trait. Consequently, the trait cannot reliably increase across generations, even if it improves survival temporarily. Therefore option A is correct; the other options are unrelated or biologically unsupported.
Frequently asked questions
What is the correct answer to this question?
Because it will not regularly pass to offspring
Why is this the correct answer?
Natural selection changes population frequencies when advantageous variations are inherited and passed through reproduction. A non-heritable useful trait may help one individual, but its offspring will not consistently receive the genetic basis for that trait. Consequently, the trait cannot reliably increase across generations, even if it improves survival temporarily. Therefore option A is correct; the other options are unrelated or biologically unsupported.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution. Topic: Inheritance.
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