goal 3.05c: evidence of evolution
DESCRIPTION
Goal 3.05c: Evidence of Evolution. Roots: m orph = shape o logy = study of Ana = without Homo = same. antidarwinism.com. Human footprints from early man found at Laetoli by Dr. Mary Leakey. Fossils = preserved remains of an organism that lived many years ago. FOSSIL EVIDENCE. - PowerPoint PPT PresentationTRANSCRIPT
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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
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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
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Comparative Morphology = study of the forms/shapes of organisms.HOMOLOGOUS Structures = same shape but different functions.
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Comparative Morphology = study of the forms/shapes of organisms.ANALOGOUS Structures = different shape but used for same thing.
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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”
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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?
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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?
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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
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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
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DNA Fingerprints and EvolutionThe closer the match for DNA fingerprints, the closer the
evolutionary relationship of the two organisms.
1 2 3 4
Who
is m
ore
clos
ely
rela
ted
to #
1?
Evidence of Evolution http://player.discoveryeducation.com/index.cfm?guidAssetId=AE274F5F-0937-430A-8762-D4BB56C72CBC&blnFromSearch=1&productcode=US