LIFE SCIENCE

Detailed explanation-1: -Definition. Evolutionary change is the heritable change in populations and species over time, due to mechanisms such as natural selection, random genetic drift, and sexual selection.

Detailed explanation-2: -Evolution: Evolution consists of changes in the heritable traits of a population of organisms as successive generations replace one another. It is populations of organisms that evolve, not individual organisms.

Detailed explanation-3: -Evolution is defined as the change in the inherited traits of a population of organisms through successive generations. When living organisms reproduce, they pass on to their progeny a collection of traits.

Detailed explanation-4: -Speciation is an evolutionary process by which a new species comes into being. A species is a group of organisms that can reproduce with one another to produce fertile offspring and is reproductively isolated from other organisms.