LIFE SCIENCE

Detailed explanation-1: -Many people think that individual organisms evolve during a single lifetime. It is not true. Evolution occurs when there is a change in the genetic makeup of the population over a period of time.

Detailed explanation-2: -Evolution, in this context, is both a fact and a theory. It is an incontrovertible fact that organisms have changed, or evolved, during the history of life on Earth. And biologists have identified and investigated mechanisms that can explain the major patterns of change."

Detailed explanation-3: -An individual does not evolve; only populations evolve in the face of the genetic changes accumulated from one generation to the next.

Detailed explanation-4: -Evolution has no single schedule. Sometimes, new species or varieties arise in a matter of years or even days. Other times, species remain stable for long periods, showing little or no evolutionary change.