EVOLUTION POWERPOINT

DIVERGENT AND CONVERGENT EVOLUTION

BY: SHAH BAIG

Evolution

Change in inherited traits from

generation-to-generation

Driven by natural selection, genetic drift.

MicroevolutionOccurrence of small changes in populations.

Convergent Evolution similar environments distantly related

Sparrow example ofMicroevolution

Sparrows located in the north are larger-bodied.

Larger bodied sparrows can survive in colder weather

MacroevolutionEvolution over long periods of time

Divergent Evolution, two species become dissimilar.

Example of Divergent Evolution

Kit Fox and Red Fox.

Red Lives in forests

Kit Lives in desert

Coats help disguise them in surroundings

Conclusion5 premises of Darwin.

Organisms compete to survive

Organisms within populations vary.

Some variation enhances survivability

Organisms with benefits survive

Features spread through generations

Natural SelectionNatural Selection is a basic part of evolution,

accompanied with migration, genetic drift, and mutation.

There is a variation in traits. Charles Darwin first noticed this with birds on the Galapagos Islands. The birds beaks well equipped to eat cactus got more food, which allowed them to be in better condition when they mate. The birds with beaks better equipped to eating seeds, and drinking nectar from flowers had an advantage there.

BibliographyGoogle.com

Wikipedia.org

Msnencarta.com