Synthetic theory of evolution

1. Synthetic theory of evolution

2. Main provisions of the synthetic theory evolutions

1. The view consists of many morphologically, biochemically,
ecologically and genetically distinct, but reproductively not
isolated units-populations and subspecies.
2. Exchange of alleles is possible only within the species, the
species is a genetically complete and closed system.
3. Material for evolution are changes heredity-mutations,
through sexual reproduction, mutations spread within the
population.

3. Main provisions of the synthetic theory evolutions

4. The Mutation process, population waves, gene drift,
isolation – factors that supply material for selection – are
random and non – directional.
5. The only guiding factor of evolution – natural selection.
6. The Smallest evolutionary unit is the population, not the
individual.

4. Main provisions of the synthetic theory evolutions

7. Evolution is divergent, one taxon can become the
ancestor of several child taxa.
8. Evolution is gradual (sometime sudden) and prolonged
character. Speciation is a gradual change in the gene pool of
a population that ends in reproduction isolation.

5. Main provisions of the synthetic theory evolutions

9. Macroevolution, evolution at the level above the species,
is only by microevolution.
10. Evolution is not directed to any purpose, evolution is not
directed, but predictable. By evaluating the possible
influence of the environment, you can predict the General
direction of evolution.

6. Thanks for your attention