_elaine’s_ Reminders_elaine’s_ Reminders

Do not use the enter key you might not see Do not use the enter key you might not see some effects. Use the mouse if possible.some effects. Use the mouse if possible.

There are videos in this presentation. Once There are videos in this presentation. Once you see a blank slide please wait and you see a blank slide please wait and you’ll see some animations.you’ll see some animations.

Click the topics you want to view.Click the topics you want to view.

Thank You Thank You

Contents Definition of EvolutionDefinition of Evolution

Mechanisms of EvolutionMechanisms of Evolution Evidences of EvolutionEvidences of Evolution

– – the change in a the change in a living population living population

over time.over time.

EvolutionEvolution

Special Creation Special Creation TheoryTheory

vsvs

The Theory of The Theory of EvolutionEvolution

Special Creation Special Creation TheoryTheory

All species were All species were made by a supreme made by a supreme

being during being during creation and that creation and that

they have changed they have changed little since thenlittle since then.

Theory of EvolutionTheory of Evolution

Evolutionists maintain Evolutionists maintain that present-day species that present-day species

have developed from have developed from simpler, more primitive simpler, more primitive organisms that existed organisms that existed millions of years ago.millions of years ago.

Early Concepts of Early Concepts of EvolutionEvolution

AristotleAristotle

The nature The nature evolved evolved

gradually gradually from the from the

simple to the simple to the more more

complex and complex and from the from the

imperfect to imperfect to the perfectthe perfect

LUCRETIUS LUCRETIUS

He wrote an evolution

ary explanation of the origin of plants and

animals.

Leonardo da VinciLeonardo da Vinci

THEORY OF THEORY OF CATASTROPCATASTROPHISMHISMThe fossil found The fossil found

in the rocks in the rocks resulted from a resulted from a succession of succession of fires and floodfires and flood

James Hutton

sedimentary sedimentary deposits was deposits was due to due to geological geological forces of forces of erosionerosion

Charles Lyell

Lamarck's Concept of EvolutionLamarck's Concept of Evolution

He believed that He believed that once organisms have once organisms have become adapted to become adapted to their environment, the their environment, the traits that they have traits that they have acquired are acquired are transmitted to the next transmitted to the next generation. generation.

Charles Darwin Charles Darwin Father of the Modern Theory of

Evolution proposed that evolution is brought about by natural selection.

Natural selection is the process by which

organisms with traits suited to an environment, or favorable traits, have a better chance of surviving

and reproducing than those that are not suited.

It is the struggle It is the struggle for existence for existence

and the survival and the survival of the fittestof the fittest

(from Latin (from Latin fossusfossus, literally , literally "having been dug up")"having been dug up")

- are the preserved remains- are the preserved remains

that had lived in the past.that had lived in the past.

• Three small ammonite fossils, each approximately 1.5 cm across.

Petrified wood. The internal structure of the tree and bark are maintained in the permineralization process.

Eocene fossil Eocene fossil fish fish Priscacara Priscacara liopsliops from from

Green River Formation of of Utah Utah

DNA CodingDNA CodingTo determine To determine whether the whether the species have species have

evolved from a evolved from a common ancestor, common ancestor, it is logical to look it is logical to look

for similarities for similarities among the speciesamong the species

Comparative anatomyComparative anatomy is is the study of similarities the study of similarities and differences in the and differences in the

anatomy of organisms.anatomy of organisms.

.

Comparative biochemistryComparative biochemistry or or biochemical evolutionbiochemical evolution is the is the study of differences in chemical study of differences in chemical (metabolic) processes among (metabolic) processes among

species . For example, the difference species . For example, the difference between carnivorous species of between carnivorous species of

animals and herbivores is included animals and herbivores is included in comparative biochemistry.in comparative biochemistry.

Comparative

Embryology