biology evolution

microevolution

evolution on a small scale

The gradual change in genes in a population over a short period time

Results in subtle changes to a species that may not be observable to the casual observer

macro evolution

Evolution on a large scale

Involves evolutionary patterns and changes above the species level Happens over a longer period of time Results in the evolution of new species and brand new groups of organisms

causes of evolution

mutation

natural seletion

migration

genetic drift

adaptaion

A structural, behavioral, or physiological trait that helps an organism survive and reproduce in its environment Adaptations are the result of gradual changes in genetic traits in members of a species over time

Variation

A visible or invisible differences among some members of a population

Selective advantages

Charateristics that improve an organisms chance of survival within its environment

Artificial selection

Selective breeding to achieve desired traits

Natural selection

Thé process which results when the charateristics of a population of organisms change because individuals with certain traits survive local environmental

Selective pressure

• selective pressure on species which in turns selects certain characteristics of individuals - drives competition

Creationisum

Predominant belief that all species were created at the same time and had remained unchanged

George Louis lecrec

First to openly challange the idea that life forms are unchanging

Mary anning

The pioneer of paleontolgy

George’s cuvier

Developed the science of paléontologies also found that each layer of rock had diffrent bones older deeper in the rock

Castastrophisum

Catastrophic events that were bad enough to hav r killed nermurous species and change the geological landscape

Charles lyall

Proposed uniformisum

Jean Baptist

• Wrote Philosophie Zoologique which documented changes in species over time

• Discussed progression in which a series of fossils (from older to more recent) led to a modern species

• Discussed that idea that species increased in complexity over time

Charles Darwin

• was in the Galapagos Islands where Darwin is famous for making his observations - most notably Darwin's Finches - which would ultimately be discussed in his book - On the Origin of Species