DARWINS ORGIN OF SPECIES AND DARWINISM WHAT IS MUTATION TYPES OF GENE MUTATION AND HOW DO MUTATION AFFECT A POPULATION

3. In 1859, Darwin published his pivotal work On the
Origin of Species by Means of Natural Selection.
 All organisms have descended with modification
from a common ancestor.
 He introduced the theory that populations evolve
over the course of generations through a process of
natural selection
 In the view of Darwinism, hereditary variation
arises by continuous “fluctuation”, and evolutionary
change accumulates automatically in infinitesimal
increments as selection preserves fluctuations in the
favorable direction.
DARWIN’S ORIGIN OF SPECIES AND DARWINISM