Goal 3.05c:Evidence of Evolution

Roots:morph = shapeology = study ofAna = withoutHomo = same

Human footprints from early man found at Laetoli by Dr. Mary Leakey.

antidarwinism.com

lboeckl.net

Fossils = preserved remains of an organism that lived many years ago.

www.greenriverstone.com

ngphotooftheday.blogspot.com

lovingthebigisland.wordpress.com

www.fossilmuseum.net

graphics8.nytimes.comimages.icnetwork.co.uk

IDA: Revealing the Linkhttp://www.revealingthelink.com/more-about-ida/the-film

FOSSIL EVIDENCE

Comparative Morphology = study of the forms/shapes of organisms.HOMOLOGOUS Structures = same shape but different functions.

Comparative Morphology = study of the forms/shapes of organisms.ANALOGOUS Structures = different shape but used for same thing.

Convergent evolution = evolution of similar solutions to similar problems without being evolutionarily connect.

3 groups with wings– Does this mean

they have a recent common ancestor?

Flight evolved 3 separate times — evolving similar solutions to similar “problems”

Flight evolved 3 separate times — evolving similar solutions to similar “problems”

Convergent evolution led to mimicry (harmless organisms having similar appearance to a harmful organism)

Monarch malepoisonous

Viceroy maleedible

fly bee moth bee

Which is the fly vs. the bee?Which is the moth vs. the bee?

• Why do these pairs look so similar?

Vestigial organs = organs that are still present but are no longer useful.

• Hind leg bones on whale fossils

Why would whales have pelvis & leg bones if they were always sea creatures?

Why would whales have pelvis & leg bones if they were always sea creatures?

Comparative embryology =

• Development of embryo tells an evolutionary story – similar structures during development

HumanFishCalfSalamanderHogTortoiseRabbitchicken

1 2 3 4 5 6 7 8

Development of embryo tells an evolutionary story

Molecular record

100 20 30 40 50 60 70 80 90 100 110 120

LampreyFrogBirdDogMacaqueHuman

328 45 67 125

• Comparing DNA & protein structure– everyone uses the same genetic code! • DNA

compare common genes compare common proteins

compare common genes compare common proteins

number of amino acids different from human hemoglobinnumber of amino acids different from human hemoglobin

DNA Fingerprints and EvolutionThe closer the match for DNA fingerprints, the closer the

evolutionary relationship of the two organisms.

1 2 3 4

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Evidence of Evolution http://player.discoveryeducation.com/index.cfm?guidAssetId=AE274F5F-0937-430A-8762-D4BB56C72CBC&blnFromSearch=1&productcode=US