Synthetic Theory of Evolution
Synthetic Theory of Evolution
Synthetic Theory of Evolution
Evolution
2 Darwinism
Darwinism
Considers all inheritable favourable variation
Does not explain the reason for variation
The basic unit of evolution is an individual
Does not consider reproductive isolation as a
major factor in new species formation.
Natural selection is the survival of the fittest
and removal of the unfit ones during the
course of time
Neo-Darwinism
The modification of original concept postulated by
Darwin and Wallace based on data obtained from
genetic research
Considers only inheritable genetic variation
(mutations) for evolution
Explains the reason for variations
The basic unit of evolution is a population
Consider reproductive isolation as a major essential
factor in speciation
Natural selection refers to the differential reproduction
leading
Dr. Istiak Mahfuz
to the changes in gene frequency
6 The Synthetic Theory