400 likes | 548 Views
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.
E N D
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 SPECIES SPECIES SPECIES SPECIES SPECIES SPECIES
What’s Taxonomy? • Pangolin’s more related to... • Crocodile? • Dog? • Anteater?
Scientific Names • used world-wide • based on Greek/Latin Why do we need scientific names? • Who’s this??
Scientific Names • Mt. Lion, puma, cougar, panther…yes to all— • Lots of common names (confusing) • Only ONE scientific name: Felisconcolor
Scientific Names Scientific name for humans? • Homosapiens Dogs? • Canisfamiliaris Cats? • Feliscatus
Binomial Nomenclature Carolus Linnaeus Swedish botanist, 18th century Developed 2-word naming system RULES: 1. ALWAYS underline or italicize • capitalize 1st word (GENUS), never the 2nd (SPECIES) huntbot.andrew.cmu.edu
More Examples: 3 Bears Which two are most closely related? 1-Ursusarctos grizzly bear 2-Ursusmaritimus polar bear 3-Ailuropodamelanoleuca panda bear SAME GENUS!!! www.esew.org, www.raydoan.com
Classification System Kingdom Phylum Class Order Family Genus species Animalia Chordata Mammalia Carnivora Ursidae Ursus arctos Animalia Chordata Mammalia Carnivora Ursidae Ursus maritimus Animalia Chordata Mammalia Carnivora Ursidae Ailuropoda melanoleuca Kings Play Chess On Fine Gold Silk
What about us??? Kingdom Phylum Class Order Family Genus species Animalia Chordata Mammalia Primates Hominidae Homo sapiens
p. 339 #4,5,8 Salamander Dichotomous Key
What’s Systematics?? • Who does it? • Related to “phylogeny”...
Phylogenetic Systematists • SEVERAL types of evidence:
Phylogenetic Trees • Structures • Homologous • Analogous
Phylogenetic Trees • Relationships, cladistics • Shared • Derived
Using Molecular Data • Amino acids! • Chromosomes!
Say What? • Lots of info • Physical features, embryos, genes, mtDNA, rRNA, amino acids • More research, revise
HW Check--p. 345 #1,3,4,8 & Friday’s Cladogram Activity
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? • Archaebacteria • Eubacteria • Protista • Fungi • Plantae • Animalia
What are DOMAINS???? BIGGER than kingdoms!
Tree of Life • http://www.sciencemag.org/feature/data/tol/