NEET BIOLOGY

Detailed explanation-1: -Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

Detailed explanation-2: -Evolution is the process by which populations of organisms change over generations.

Detailed explanation-3: -Darwin’s theory of evolution describes evolution as a slow, gradual continuous process of change. This could mean that evolutionary changes could occur over thousands or hundreds of thousands of years. It is so gradual that one cannot detect these changes in a lifetime, or even over several generations.

Detailed explanation-4: -Phyletic gradualism is a model of evolution which theorizes that most speciation is slow, uniform and gradual. When evolution occurs in this mode, it is usually by the steady transformation of a whole species into a new one (through a process called anagenesis).

Detailed explanation-5: -Individual organisms can evolve during a single lifespan. Evolution only occurs slowly and gradually. Because evolution is slow, humans cannot influence it.