LIFE SCIENCE

Detailed explanation-1: -Punctuated Equilibrium A proposed explanation in evolutionary biology stating that species are generally stable over long periods of time. Occasionally there are rapid changes that affect some species which can quickly result in a new species.

Detailed explanation-2: -But in 1972, evolutionary scientists Stephen Jay Gould and Niles Eldredge proposed another explanation, which they called “punctuated equilibrium.” That is, species are generally stable, changing little for millions of years.

Detailed explanation-3: -Macroevolution: Large-scale evolution occurring over geologic time that results in the formation of new species and broader taxonomic groups. Microevolution: Changes in the traits of a group of organisms within a species that do not result in a new species.

Detailed explanation-4: -In evolutionary biology, punctuated equilibrium (also called punctuated equilibria) is a theory that proposes that once a species appears in the fossil record, the population will become stable, showing little evolutionary change for most of its geological history.