Evolution Review

Chapter 16, 17, and 19

Evolution Notes 2010 2

Natural Selection

mechanisms for descent with modifications4 main parts1. Overproduction2. Genetic variation3. Struggle to survive4. Differential reproduction

Evidence of Evolution

1. Fossils2. Biogeography3. 3.Anatomy4. Embryology5. DNA

Why do we have 12 different species of Finches on the Galapagos Is

They are all t

...

They all migr

a...

They have ch

an... N

one

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:101. They are all the same, no change2. They all migrated to the islands3. They have changed over time by

eating different food4. None

Darwin believe that the finches had

same diet

Common ance

sto...

All fro

m Ohio

Born w

ith id

en...

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1. same diet2. Common ancestors3. All from Ohio4. Born with identical beaks

and just changed during their lifetime

Human embryos have all but

Bony tail Fi

ns

Coat of f

ur

Pharyngeal pou...

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:101. Bony tail2. Fins3. Coat of fur4. Pharyngeal pouches

Structures that no longer are needed

Homologo

us

Analogous

Vestigial

Fossi

ls

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1. Homologous2. Analogous3. Vestigial4. Fossils

Has common ancestor but not function

Homologous

Analo

gous

Vesti

gial

Fossi

ls

25% 25%25%25%

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1. Homologous2. Analogous3. Vestigial4. Fossils

Has different ancestors but common function

Homologo

us

Analogo

us

Vesti

gial

Fossi

ls

25% 25%25%25%

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1. Homologous2. Analogous3. Vestigial4. Fossils

Evidence of Evolution

DNA

Fossi

ls

Embryo

s

Anatomy

Biography

All of t

he abo...

None of t

he ab...

14% 14% 14% 14%14%14%14%

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1. DNA2. Fossils3. Embryos4. Anatomy5. Biography6. All of the above7. None of the above

What can be a fossil

Shells

Old bones

Dead org

anisms

Inse

cts in

sap

Animals

in tar

Petrified w

ood

All of t

he abo...

14% 14% 14% 14%14%14%14%

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1. Shells2. Old bones3. Dead organisms4. Insects in sap5. Animals in tar6. Petrified wood7. All of the above

Evolution that takes place over many years

Punctuate

d

Grad

ualism

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1. Punctuated2. Gradualism

Evolution most likely due to a natural disaster

Punctu

ated

Gra

dualism

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1. Punctuated2. Gradualism

What did Darwin Say

Plants ch

anged...

Some sp

ecies c

...

Specie

s change...

Virus a

nd bact...

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1. Plants changed animals didn’t2. Some species changed but didn’t

compete with one another3. Species changed over time by means

of natural selection4. Virus and bacteria never change

Ones fitness is

Org

anisms c

an ...

Org

anisms c

an ...

Org

anisms w

ill...

Org

anism w

ith ...

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1. Organisms can reproduce2. Organisms can adapt to their

environment over night3. Organisms will not reproduce4. Organism with the best traits for that

ecosystem at that time will reproduce

Where did Darwin collect most of his organisms

Ohio

Hawaii

an islan

...

Galapagos i

sla...

Africa

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1. Ohio2. Hawaiian islands3. Galapagos islands4. Africa

Scientist believe the earth is ___ years old

200000

4 milli

on

4 billion

4.5 billion

Don’t k

now

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1. 200,0002. 4 million3. 4 billion4. 4.5 billion5. Don’t know

Organism that have homologous structures we infer

They have sa

me...

DNA se

quence, ..

.

Have

identica

l...

Cant tell a

nyt...

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:101. They have same number of chromosomes

2. DNA sequence, nucleotides may be similar

3. Have identical DNA4. Cant tell anything

T/ F Lamarck was correct in his theory

True

false

50%50%

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1. True2. false

Lyell collected fossils

True

False

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1. True2. False

Natural selection causes

Competition in...

To produce

mor..

.

Chang in th

e a...

All of t

he abo...

Note of t

he ab...

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:101. Competition in species2. To produce more offspring

than can survive3. Chang in the alleles In a

population4. All of the above5. Note of the above

When an organisms becomes better suited for it environment

Accommodati

on

Variation

Adaptation

Selecti

on

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1. Accommodation2. Variation3. Adaptation4. Selection

According to Darwin, Evolution occurs

By chance

Because

of hal...

Because

of nat..

.

rapidly

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:101. By chance2. Because of half-life3. Because of natural selection4. rapidly

Please make your selection...

Choice O

ne

Choice Two

50%50%1. Choice One2. Choice Two

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Please make your selection...

Choice O

ne

Choice Two

50%50%1. Choice One2. Choice Two

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Please make your selection...

Choice O

ne

Choice Two

50%50%1. Choice One2. Choice Two

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Please make your selection...

Choice O

ne

Choice Two

50%50%1. Choice One2. Choice Two

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