Darwinian Evolution: Descent & Selection — NEET Biology

Which of the following statements are correct concerning the principles of natural selection and evolution? S1: Natural selection acts on heritable variations present within a population. S2: According to Darwin, fitness primarily refers to an individual's ability to acquire new traits during its lifetime to better suit the environment. S3: Organisms that are better adapted to an environment tend to leave more progeny, increasing the frequency of their advantageous traits in subsequent generations. S4: The concept of inheritance of acquired characters was a fundamental component of Darwin's theory of natural selection. S5: Natural selection is considered a stochastic process, meaning it is based on chance events in nature and chance mutations in organisms.