Empty slide to keep flashcards in order
This presentation is the property of its rightful owner.
Sponsored Links
1 / 67

Empty slide to keep flashcards in order PowerPoint PPT Presentation


  • 53 Views
  • Uploaded on
  • Presentation posted in: General

Empty slide to keep flashcards in order. What is evolution ?. What is evolution ?. Change in organisms over a long time. In order for evolution to occur, there must be _____________ __________ present. In order for evolution to occur, there must be NATURAL VARIATION present.

Download Presentation

Empty slide to keep flashcards in order

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Empty slide to keep flashcards in order

Empty slide to keep flashcards in order


Empty slide to keep flashcards in order

What is evolution?


Empty slide to keep flashcards in order

What is evolution?

Change in organisms over a long time


Empty slide to keep flashcards in order

In order for evolution to occur, there must be _____________ __________ present.


Empty slide to keep flashcards in order

In order for evolution to occur, there must be NATURALVARIATION present.


Empty slide to keep flashcards in order

James HuttonCharles Lyell

Hutton and Lyell were geologists who stated the Earth was _________ years old, not thousands that people thought.


Empty slide to keep flashcards in order

James HuttonCharles Lyell

Hutton and Lyell were geologists who stated the Earth was MILLIONS of years old, not thousands.


Empty slide to keep flashcards in order

Who wrote about human population growth eventually exceeding the Earth’s resources threatening our species survival?


Empty slide to keep flashcards in order

Who wrote about human population growth eventually exceeding the Earth’s resources threatening our species survival? MALTHUS


Empty slide to keep flashcards in order

Most species produce many more offspring than the resources in that area can handle. This leads to a situation called ________?


Empty slide to keep flashcards in order

Most species produce many more offspring than the resources in that area can handle. This leads to a situation called:

Struggle for Existence


Empty slide to keep flashcards in order

Lamark

What 3 evolution ideas did Lamark have?

Not all were accurate

(Hint: “Lamark missed the mark”)


Empty slide to keep flashcards in order

  • Lamark

  • Species strive for perfection and complexity

  • “Use it, or lose it”

  • Acquired traits are passed on to offspring


Empty slide to keep flashcards in order

Darwin proposed the theory of __________ _________.


Empty slide to keep flashcards in order

Darwin proposed the theory of NATURAL SELECTION


Empty slide to keep flashcards in order

Darwin

He studied the Galapagos finches and examined how they evolved. He used the term: _______________________


Empty slide to keep flashcards in order

Darwin

Studied the Galapagos finches and examined how they evolved. He used the term: “Survival of the Fittest”


Empty slide to keep flashcards in order

What is the type of adaptation that new species originate from one ancestor like Darwin’s finches?

“Tweak the Beak”


Empty slide to keep flashcards in order

Adaptive Radiation


Empty slide to keep flashcards in order

Darwin said that the ability of an organism to survive and reproduce in its environment is called its ______________.


Empty slide to keep flashcards in order

Darwin said that the ability of an organism to survive and reproduce in its environment is called its FITNESS!


Empty slide to keep flashcards in order

Name the type of evolutionary change where there is a long period of steady evolution and then a sudden event such as a volcano eruption?

A man by the name of Gould came up with this idea.


Empty slide to keep flashcards in order

Punctuated Equilibrium

A man by the name of Gould came up with this idea.


Empty slide to keep flashcards in order

Structures from same ancestor, with same bone structure, but with different functions are called _________________structures.


Empty slide to keep flashcards in order

Structures from same ancestor, with same structure, but with different functions are called Homologous (Homo=same) structures.


Empty slide to keep flashcards in order

Structures from different ancestors, but perform similar function are called

______________ structures.

Example: wings for flying


Empty slide to keep flashcards in order

Structures from different ancestors, but perform same function are called

Analogous

Ana=“not” structures.


Empty slide to keep flashcards in order

_____organs are ones that are reduced in size and have no known function any longer.


Empty slide to keep flashcards in order

Vestigial organs are ones that are reduced in size and have no known function any longer.


Empty slide to keep flashcards in order

What is a fossil?


Empty slide to keep flashcards in order

What is a fossil?

Preserved remains of a living organism


Empty slide to keep flashcards in order

Who studies fossils?

What is it called to date a fossil?

Where are the oldest fossils found in soil?


Empty slide to keep flashcards in order

Who studies fossils? Paleontologists

What is it called to date a fossil? Relative Dating : position of fossil in Earth’s rock layers

Where are the oldest fossils found in soil? Lowest rock layers


Empty slide to keep flashcards in order

Hardy-Weinberg Equilibrium Principle

Name the 5 parts to the Hardy-Weinberg principle to maintain genetic equilibrium?


Empty slide to keep flashcards in order

Genetic Equilibrium will occur if ALL of the following 5 conditions must exist

(this is highly unlikely to ever happen)

No mutations

No emigration/immigration

No natural selection

Must be a large population

Random mating must occur


Empty slide to keep flashcards in order

All the combined alleles in a population (species living in an area) is called the ____ ____.


Empty slide to keep flashcards in order

All the combined alleles in a population (species living in an area) is called the gene pool.


Empty slide to keep flashcards in order

What is the gene frequency change in a small population which is due to chanceor random event?


Empty slide to keep flashcards in order

Genetic Drift


Empty slide to keep flashcards in order

What is it called when a few organisms leave their original habitat and start a new colony with fewer allele frequency than the original colony?


Empty slide to keep flashcards in order

What is it called when a few organisms leave their original habitat and start a new colony with fewer allele frequency than the original colony?

FOUNDER EFFECT


Empty slide to keep flashcards in order

A species is an organism that can _____________ and produce ____________ __________.

Horse

Donkey

Mule


Empty slide to keep flashcards in order

A species is an organism that can reproduce and produce fertile offspring.

Horse

Donkey

Mules are not a species


Empty slide to keep flashcards in order

Why do some species evolve faster than others? Example: antibiotic resistant bacteria (don’t respond to an antibiotic)


Empty slide to keep flashcards in order

Why do some species evolve faster than others? Example: antibiotic resistant bacteria (don’t respond to an antibiotic)

Bacteria reproduce so rapidly they can mutate (change/evolve) faster than larger organisms that reproduce slower.


Empty slide to keep flashcards in order

What is natural selection?

What is artificial selection?


Empty slide to keep flashcards in order

Natural Selection: Nature selects the best traits for survival

Changes allele frequency

Artificial selection: Man selects best traits to breed.


Empty slide to keep flashcards in order

Name 3 types of “Reproductive Isolation”

Define each one.


Empty slide to keep flashcards in order

Types of Reproductive Isolation

Behavioral Isolation: Traits or habits preventing reproduction (the mating song or dance of a bird)

Geographical Isolation: Land separation of individuals in a species keeping them from reproducing (oceans, rivers, canyons, etc.)

Temporal Isolation: Mating season is different such as winter vs. spring or April vs. October or night vs. day.


Empty slide to keep flashcards in order

Name the following graphs and describe what is happening.

1

2

3


Empty slide to keep flashcards in order

Name the following graphs and describe what is happening.

Stabilizing: The average (middle) individuals of a species are fittest.

1

Disruptive: The individuals at the outer ends are fittest.

2

Directional: The individuals at one end are fittest.

3


Empty slide to keep flashcards in order

What is convergent evolution?

What is divergent evolution?


Empty slide to keep flashcards in order

What is convergent evolution?

Two species that had different ancestors but due to living in the same environment, they look alike such as the dolphin and shark.

What is divergent evolution?

Two or more species have the same ancestor but have branched off into new species.


Empty slide to keep flashcards in order

What type of evolution is this when one species must evolve along with another for survival?


Empty slide to keep flashcards in order

What type of evolution is this when one species must evolve along with another for survival?

Coevolution


Empty slide to keep flashcards in order

During the Industrial Age, smog caused trees with lichen (white fungi/algae) to die and coated the trees with black soot. This caused a situation called melanism: an increased amount of black or nearly black pigmentation (as of skin, feathers, or hair) of an organism.

White moths became more black to survive being eaten.


Empty slide to keep flashcards in order

Peppered Moth &

Melanism

Best

environment

for white moths to avoid being eaten by birds

Best environment for black moths

to avoid being eaten by birds

Environmental Pressure!


Empty slide to keep flashcards in order

Half-Life Calculations

Calculate the following if the half-life of an element is 200 years…

The starting mass was 500 grams and ending mass is 31.25 grams.

How many half-lives?

How old is the element?

How much of element is left (fraction)?


Empty slide to keep flashcards in order

Half-Life Calculations

Calculate the following if the half-life of an element is 200 years…

The starting mass was 500 grams and ending mass is 31.25 grams.

(Hint: Divide by 2 until you reach the mass you are looking for.)

500 g 250g 125g62.5g 31.25g

1/2

1/4

1/8

1/16

1

2

3

4 Half-Lives

200 yrs

400 yrs

600 yrs

800 yrs old


Empty slide to keep flashcards in order

Look at these embryos. Which groups came from the same ancestors?


Empty slide to keep flashcards in order

Look at these embryos. Which groups came from the same ancestors?


Empty slide to keep flashcards in order

DNA Matching: Which puppy came from the mother dog?

Mom Dog Puppy 1 Puppy 2 Puppy 3


Empty slide to keep flashcards in order

DNA Matching: Which puppy came from the mother dog?

Mom Dog Puppy 1 Puppy 2 Puppy 3


Empty slide to keep flashcards in order

What lead to the increase in oxygen on the Earth’s surface millions of years ago?


Empty slide to keep flashcards in order

What lead to the increase in oxygen on the Earth’s surface millions of years ago?

Photosynthetic

Bacteria


  • Login