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Opening Activity. Identify which era the following species might be first found in: 1) Single-celled pond scum 2) Lizard 3) Jellyfish 4) Pine tree 5) Bird 6) Sponge 7) Mammal 8) Flowering plant. DECEMBER 13TH , 2010. Classification. Speciation.

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Opening activity

Opening Activity

Identify which era the following species might be first found in:

1) Single-celled pond scum

2) Lizard

3) Jellyfish

4) Pine tree

5) Bird

6) Sponge

7) Mammal

8) Flowering plant


December 13th 2010

DECEMBER 13TH, 2010

Classification


Speciation

Speciation

Speciation requires geographic isolation.

Otherwise, genes keep mixing and differences don’t get bigger.

Geographic isolation:

Different continents

Rivers, canyons, or mountains inbetween

Significantly different environments


Speciation vs genetic drift

Speciation vs. Genetic Drift

Geographic isolation

Two species are different when:

They cannot mate

or

Their offspring are strongly selected against, limiting the number of hybrids.


Classification

Classification

Scientists used to categorize and name species on the basis of visible similarities and differences. Now they also include DNA mapping and other less obvious features.

Linnaeus is the scientist who created the naming system.

Each species gets two Latin names.

Ex:

Homo sapien

Canis lupus


Classification system

Classification System

Big

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species

Kings

Play

Chess

On

Fine

Gold

Silk

Small


Branching tree diagrams

Branching Tree Diagrams

Zoology, cladistics, and phylogeny are all types of science that deal with categorizing species. They use a branching tree diagram to show divergence from a common ancestor.

Which species are

contemporary (modern)?

2) Which two species are the most different?

3) Which species is a common ancestor of both C and D?

4) Which direction is forward in time?

5) Under what conditions might have species B diverged into two different species?

A

B

C

D

E


Opening activity

Prokaryotes

Archaea

Halophile

Eukaryote

Domain:

Bacteria

E. Coli

Kingdom:

Protist

Amoeba

Fungi

Plant

Animal

Bryophyte

(Non-Vascular)

Moss

Tracheophytes

(Vascular)

Club

Mushroom

Chordate (Vertebrate)

Phylum:

Sac

Yeast

Zygote

Mold

Class:

Seedless

Fern

Gymnosperm

Pine tree

Angiosperm

Ectotherm

Endotherm

Sub-Class or Order:

Monocot

Wheat

Dicot

Rose

Invertebrate

Porifora

Sponges

Jawless Fish

Lamprey

Amphibians

Birds

Cnidarians

Jellyfish

Reptiles

Mammals

Cartilaginous Fish

Shark

Mollusks

Flatworms

Tapeworm

Bony Fish

Salmon

Monotremes

Platypus

Echinoderms

Starfish

Crocodiles

& Alligators

Roundworms

Heartworm

Salamanders

Arthropods

Marsupial

Kangaroo

Frogs & Toads

Lizards

Segmented Worms

Earthworm

Snakes

Placental

Human

Gastropods

Snails

Bivalves

Clams

Cephalopods

Octopi

Crustaceans

Crawfish

Arachnids

Tarantula

Insects

Beetles

Centipedes

& Millipedes

Turtles


Homework

Homework

Ch. 7.3  7.5 Short Notes

Attempt your science fair project and either identify and solve a problem or if it all works, gather your first trial’s worth of data.


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