LIFE SCIENCE

Detailed explanation-1: -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-2: -Summary. Darwin thought that evolution occurs gradually. This model of evolution is called gradualism. The fossil record better supports the model of punctuated equilibrium. In this model, long periods of little change are interrupted by bursts of rapid change.

Detailed explanation-3: -In modern biology, gradualism, or “phyletic gradualism, ‘’ refers primarily to a pattern of sustained, directional, and incremental evolutionary change over a long period during the history of a species.