AP BIOLOGY

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: -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-3: -Gradualism in biology and geology refers most broadly to a theory that changes of organic life and of the Earth itself occur through gradual increments, and often that transitions between different states are more or less continual and slow rather than periodic and rapid.

Detailed explanation-4: -Gradualism is selection and variation that happens more gradually.