As it is no longer just Darwin's theory we know the mechanisms for change are mutation, gene flow, genetic drift and the one Darwin developed, natural selection.
Natural selection is a mechanism of adaptive change in evolution.
The mechanism and main driver of adaptive change in evolution is natural selection.
Natural Selection.
Natural selection, which is the mechanism for evolution.
There are several mechanisms for evolution. The first (and most important) being natural selection, which plays off random mutations. Genetic drift is also another important aspect of evolution. EDIT: It depends on what you mean by "mechanism." Mutations are thought to be the mechanism that causes the change in DNA, then natural selection and Gentic drift take over. Unfortunately, mutations do not hold up and evolution is ultimately left without a mechanism. This article on mutations gives an indepth explanation http://www.answersingenesis.org/articles/wow/are-mutations-the-engine STRAIT FROM THE BIOLOGY BOOK :)
Natural selection is a mechanism of adaptive change in evolution.
The main mechanism of adaptive change is natural selection. There are other mechanisms of evolution though Google ' mechanisms of evolution. '
The mechanism and main driver of adaptive change in evolution is natural selection.
Adaptive change and speciation.
Natural Selection.
The main driving mechanism of evolution is natural selection. Though genetic drigt and gene flow can also cause evolution.
The basic one of evolution. That organisms change over time.
Darwin used the phrase "descent with modification" (he didn't use the term "evolution")
The gradual change in the characteristics of a species over time is called evolution. The theory of evolution by natural selection was first proposed by Charles Darwin.
Descent with modification. This is what Darwin called evolution.
Charles Darwin changed history with his theory of evolution. His theory of evolution suggested that species undergo small changes over time.
Natural selection, which is the mechanism for evolution.