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Jigsaw activity: How does mutation lead to Adaptation ? What is Natural Selection ? Give an example of Natural Selection. What is the Theory of Evolution ? What evidences support Evolution?. Jig saw Activity: Adaptation, Natural Selection, and Evolution. Jigsaw activity:.

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Jigsaw activity: How does mutation lead to Adaptation ? What is Natural Selection ?

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Jigsaw activity how does mutation lead to adaptation what is natural selection

Jigsaw activity:

How does mutation lead to Adaptation?

What is Natural Selection?

Give an example of Natural Selection.

What is the Theory of Evolution?

What evidences support Evolution?


Jigsaw activity how does mutation lead to adaptation what is natural selection

Jig saw Activity: Adaptation, Natural Selection, and Evolution


Jigsaw activity how does mutation lead to adaptation what is natural selection

Jigsaw activity:

On a piece of A3 paper, write a paragraph summary that answers your assigned question. Be ready to present your answers to your peers.

How does mutation lead to Adaptation?

3. Give an example of Natural Selection.

5. What evidences support Evolution?

4. What is the Theory of Evolution?

2. What is Natural Selection?


Jigsaw activity how does mutation lead to adaptation what is natural selection

1

GENETIC VARIATION

leads to

Adaptation


Jigsaw activity how does mutation lead to adaptation what is natural selection

Fig. 22.11. Some spectacular adaptations.


Adaptation

Adaptation

  • Adaptation is a long evolutionary process where a population becomes better suited to its habitat.

Feature which is especially important for an organism's

survival.

Horse’s teeth

Such adaptations are produced by the better suited forms reproducing more successfully, which is natural selection.


Jigsaw activity how does mutation lead to adaptation what is natural selection

2

Adaptation is driven by Natural Selection


Jigsaw activity how does mutation lead to adaptation what is natural selection

There are 2 variations of the beetles, green and red.

The birds prefer eating the green beetles.

Over generations the red beetles increase in population because they are not eaten by the birds.

More survive to produce more offspring.

Generations later….

Over time the red beetles have been selected over the green beetles


Jigsaw activity how does mutation lead to adaptation what is natural selection

3

An Example of Natural Selection


Jigsaw activity how does mutation lead to adaptation what is natural selection

How did giraffe’s develop their long necks?

Giraffe you tube video


Jigsaw activity how does mutation lead to adaptation what is natural selection

Incorrect model of evolution

Change through use and disuse


Jigsaw activity how does mutation lead to adaptation what is natural selection

Ancestors had different neck lengths

Through natural selection, longer necks survived and passed on their genes.

Eventually all giraffes had long necks.

Natural Selection’s Explanation


Jigsaw activity how does mutation lead to adaptation what is natural selection

4

Theory of Evolution


Evolution

Evolution

  • Evolution is the change in the inherited traits (passed on from parents to offspring) of a population over many generations. These traits could be physical, chemical or behavioral.

This change is caused by mutations in the genes.


Jigsaw activity how does mutation lead to adaptation what is natural selection

Video Clip: http://www.youtube.com/watch?v=yVqJ_mQazik


How does evolution work

How does Evolution Work?

Natural Selection(survival of the fittest) is simply the logical result of four features of living systems:

INHERITANCE

VARIATION

Individuals in a

population

vary from one

another (different

genes caused by

mutations)

parents pass on their traits to

their offspring genetically

SELECTION

some variants reproduce more than others

TIME

successful variations accumulate over many generations


Jigsaw activity how does mutation lead to adaptation what is natural selection

5

Evidences supporting Evolution


Jigsaw activity how does mutation lead to adaptation what is natural selection

Similarities in Genetic Code


Jigsaw activity how does mutation lead to adaptation what is natural selection

  • 225 Million Years Ago the continents were together making a super continent called Pangaea

  • When the continent began to split populations were separated.


Jigsaw activity how does mutation lead to adaptation what is natural selection

  • This increased the variety of living things because they all had to adapt to different and new environments and habitats.


Jigsaw activity how does mutation lead to adaptation what is natural selection

ONEA Common Ancestor


Jigsaw activity how does mutation lead to adaptation what is natural selection

SIMILARITIES IN STRUCTURES


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