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Bell Work 1/5  Take out yesterdays worksheet and answer the summary and fill out the 3 Bell Work 1/5  Take out yesterdays worksheet and answer the summary and fill out the 3

Bell Work 1/5 Take out yesterdays worksheet and answer the summary and fill out the 3 - PowerPoint Presentation

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Bell Work 1/5 Take out yesterdays worksheet and answer the summary and fill out the 3 - PPT Presentation

HAPPY WEDNESDAY Bellwork Write down only the bolded red portion and your answer Two species of mice live in a field in the middle of East Texas One mouse species is WHITE with BLACK spotting ID: 909078

evolution population answer poison population evolution poison answer natural selection lizards island change long ants adaptation offspring notes individuals

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Presentation Transcript

Slide1

Bell Work 1/5

Take out yesterdays worksheet and answer the summary and fill out the 3 questions you still have about evolution

Slide2

 HAPPY WEDNESDAY 

Bellwork

:

Write down only the

bolded red

portion and your

answer

.

Two species of mice live in a field in the middle of East Texas. One mouse species is

WHITE with BLACK spotting.

The other is

BROWN with WHITE spotting.

After a year, the population of

white mice

has dramatically

decreased

, while the population of the

brown mice

has

slightly increased

.

Why would this be happening?

Slide3

CHAMPS

C

-Conversation

H

-Help

A

-Activity

M

-Movement

P

-Participation

Slide4

Instruction

C

-No Talking

H

-Raise your hand

A

-Take Notes

M

-Stay in your seat

P

-Take Notes

Slide5

Set up your page for today’s notes…

Page:

49

Date:

1-5-16

Title:

Natural Selection

Essential Question:

How is natural selection related to adaptation and diversity?

Yes, this is Cornell Notes!!

Slide6

What is evolution?

Slide7

Evolution

: change in heritable traits of a population over time (generations)

Slide8

Charles Darwin

:

contributed more to our understanding of evolution than anyone else

Slide9

What can affect evolution?

Slide10

Population Size

: limited by environmental factors such as

Food

Shelter

Water

Predators

Disease

Pollution

Slide11

BELL WORK (Buff Binder)

:

Open your journal to yesterday’s notes.

Based on what you’ve written so far,

try to answer the following question

:

How does diversity affect evolution?

Slide12

Slide13

Fitness

:

the ability of an organism to survive and reproduce; results from adaptations

Slide14

Adaptation

:

inherited characteristic that increases an organism’s chance of survival

Slide15

Successful adaptations will:

- make organisms better suited to their environment

- increase

fitness

Humans have thousands of adaptations: large brain, opposable thumbs, excellent sensory organs, light, strong skeleton, etc.

Slide16

What is the primary mechanism of evolution?

Slide17

Natural selection

:

individuals with characteristics not well suited to their environment will either die or leave few offspring

*

Also called “survival of the fittest”

*

Observed as changes in a population over time, NOT individual organisms!

Slide18

1. A

population of giraffes inhabits an area filled with

tall trees

and

vegetation that is located high off of the ground

. Within the population of giraffes are individuals with short, medium, and long necks.

Which of the

individuals

will leave behind the most offspring?

Long necks – they will be able to reach the food better than the others, and will therefore survive longer & leave more offspring

Slide19

2. Complete the following sentence with the correct answer choice.

Natural selection happens

(quickly/slowly)

and occurs in

(individuals/populations).

Slide20

3. A

brand of fire ant poison claims to kill all ants in two applications. The first application of the poison killed 74% of the fire ants. Three months later, the poison was reapplied but only killed 39% of the remaining fire ant population.

Explain

the decrease in the effectiveness of the ant

poison.

The remaining ants were resistant to the poison.

What genes will these remaining ants pass to their offspring?

Slide21

4.

Imagine that a small island holds a population of lizards that are all the same (have the same traits). Now imagine a strong storm sweeps some of the island lizards over to the mainland. On the mainland, there are

new ecosystems

for the island lizards to explore. In these new ecosystems, they meet new populations of lizards (with new traits) that they can now breed with.

What might happen with regards to the

variation

that could be created within the population of island lizards

?

(more change, less change, no change)

Slide22

5.

In Madagascar scientists have discovered a moth,

Xanthopan

morganii

praedicta

, which has a

30.5 cm

long proboscis and feeds from and pollinates Darwin’s orchid,

Angraecum

sesquipedale

. The orchid has a nectar-producing tube that is

27.9 cm

long.

How is the moth’s proboscis size an adaptation for its environment?

The moth has very little competition for its food.

Slide23

Bunny Simulation

Slide24

QUICKWRITE

Answer the essential question (How is natural selection related to adaptation and diversity?)