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17-1: Biodiversity. What’s biodiversity?. Variety of species ~1.5 million species named & identified so far ~2-100 million yet to discover Do we want lots or a little? Why? Macroevolution, Campbell CD Activity 14C. Taxonomy: a hierarchy. D K P C O F G S. BIGGER. SPECIES. - PowerPoint PPT Presentation
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17-1: Biodiversity
What’s biodiversity?
Variety of species ~1.5 million species named & identified
so far~2-100 million yet to discover
Do we want lots or a little? Why? Macroevolution, Campbell CD Activity 14C
D K P C O F G S
Taxonomy: a hierarchy
SPECIESSPECIESSPECIESSPECIESSPECIESSPECIES
BIGGER
BIGGER
SPECIES
More Vocab!More Vocab!
What’s Taxonomy?
Pangolin’s more related to...Crocodile?Dog?Anteater?
Scientific NamesScientific Names used world-wideused world-wide based on Greek/Latinbased on Greek/Latin
Why do we need scientific names?Why do we need scientific names? Who’s this?? Who’s this??
Scientific NamesScientific Names Mt. Lion, puma, cougar, Mt. Lion, puma, cougar,
panther…yes to all—panther…yes to all—
Lots of common names Lots of common names (confusing)(confusing)
Only ONE scientific name: Only ONE scientific name:
FelisFelis concolorconcolor
Scientific NamesScientific Names
Scientific name for humans?Scientific name for humans? HomoHomo sapienssapiens
Dogs? Dogs? CanisCanis familiarisfamiliaris
Cats? Cats? FelisFelis catuscatus
Binomial NomenclatureBinomial NomenclatureCarolus Linnaeus Carolus Linnaeus
Swedish botanist, 18Swedish botanist, 18thth century century
Developed 2-word naming Developed 2-word naming systemsystem
RULES: RULES:
1. 1. ALWAYSALWAYS underline or italicize underline or italicize
2.2. capitalize 1capitalize 1stst word (GENUS), word (GENUS), nevernever the 2 the 2nd nd (SPECIES) (SPECIES)
huntbot.andrew.cmu.edu
More More Examples: Examples: 3 Bears 3 Bears
1-Ursus1-Ursus arctosarctos
grizzly beargrizzly bear
2-Ursus2-Ursus maritimusmaritimus
polar bearpolar bear
3-Ailuropoda3-Ailuropoda melanoleucamelanoleuca
panda bearpanda bear
www.esew.org, www.raydoan.com
Which two are most Which two are most closely related?closely related?
SAME SAME GENUS!!!GENUS!!!
Classification SystemClassification SystemKingsKings
PlayPlay
ChessChess
OnOn
FineFine
GoldGold
SilkSilk
KingdomKingdom
PhylumPhylum
ClassClass
OrderOrder
FamilyFamily
GenusGenus
speciesspecies
AnimaliaAnimalia
ChordataChordata
MammaliMammaliaa
CarnivorCarnivoraa
UrsidaeUrsidae
UrsusUrsus
arctosarctos
AnimaliaAnimalia
ChordataChordata
MammaliMammaliaa
CarnivorCarnivoraa
UrsidaeUrsidae
UrsusUrsus
maritimumaritimuss
AnimaliaAnimalia
ChordatChordataa
MammalMammaliaia
CarnivorCarnivoraa
UrsidaeUrsidaeAiluropodaAiluropoda
melanoleucmelanoleucaa
What about us???What about us???
KingdomKingdom
PhylumPhylum
ClassClass
OrderOrder
FamilyFamily
GenusGenus
speciesspecies
AnimaliaAnimalia
ChordataChordata
MammaliMammaliaa
PrimatesPrimates
HominidHominidaeae
HomoHomo
sapienssapiens
p. 339 #4,5,8
17-2 Systematics17-2 Systematics
What’s Systematics??
Who does it?
Related to “phylogeny”...
Phylogenetic Systematists
SEVERAL types of evidence:
Phylogenetic Trees
StructuresHomologous
Analogous
Phylogenetic Trees
Relationships, cladisticsShared
Derived
Using Molecular Data
Amino acids! Chromosomes!
Say What?
Lots of info Physical features, embryos, genes,
mtDNA, rRNA, amino acids More research, revise
Try it!—We’ll use physical characteristics:
Mammals
Birds Amphibians Reptiles Fishes
Backbone X X X X X
Egg can be laid in air X X X
Hair, warm blood X
2 arms, 2 legs X X X X
2 holes in skull behind eye
X X
Feathers, warm blood X
Double eyelid X
HW Check--p. 345 #1,3,4,8 & Friday’s
Please list the EIGHT levels of taxonomy, in order, and what’s
all of that for humans?!?!?!
17-3: Classification
Campbell cd Activity 15C!!
What are the 6 Kingdoms?1. Archaebacteria2. Eubacteria3. Protista4. Fungi5. Plantae6. Animalia
What are DOMAINS????
BIGGER than
kingdoms!
Tree of Life
http://www.sciencemag.org/feature/data/tol/
p.350 # 1-3,6,8
Let’s Review…
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