Biology for IGCSE & O level - Variation And Selection (Section 6 - No. 29)
In what way does variation in a population provide the foundation for natural selection?
It leads to a greater need for competition
It prevents natural selection from occurring.
It gives the environment something to select against or select for.
It causes all members of the population to become identical.
Vysvětlení
Variation provides the basis for selection to occur.