The proportion of well-adapted organisms in a population can increase over the generations by the process of evolution by natural selection.

The modern evolutionary synthesis, which marries Darwin's theory of natural selection with Mendel's genetics ... together with a vast diversity of types of information processing.

Aa Aa Aa Natural selection, genetic drift, and gene flow are the mechanisms that cause changes in allele frequencies over time. When one or more of these forces are acting in a population ...

The phrase "survival of the fittest" functions principally in evolutionary theory to describe the biological concept of natural selection ... Different types of adaptations include physical ...