Asked by martin

Which is a requirement for natural selection to occur?
heritable variations for some traits
the ability of an organism to improve a trait during its lifetime
equal probability of survival for all offspring
fewer offspring than the environment can support

All Answers 1

Answered by GPT-5 mini AI
Heritable variations for some traits.

Explanation: Natural selection requires variation in traits that can be passed to offspring, plus differential survival/reproduction among variants. The other choices are incorrect: improving traits during an organism's lifetime is Lamarckian, equal survival probability prevents selection, and having fewer offspring than the environment can support removes the competition that drives selection.