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Vocab
Changing Populations
Environmental Changes
What would happen?
Random
100

The natural differences that exist between members of the same species

Variation

100

What would happen to a trait that makes an organism more likely to attract a mate?

It will increase in the population

100

Which color of moth was most likely to survive and reproduce in the environment BEFORE coal covered the trees in soot?

White/light

100

To the frequency of a beneficial mutation in a population over time?

Increase

100

Natural selection favors traits that make an organism more likely to _____ AND _______

Survive and reproduce

200

Darwin termed natural selection as "survival of the..."

Fittest

200

What would happen to a trait that makes an organism more attractive to predators?

It will decrease in the population

200

Which color of moth was most likely to survive and reproduce in the environment AFTER coal covered the trees in soot?

Black/Dark

200

To the frequency of a harmful mutation in a population over time?

Decrease

200

What did Darwin notice about the finches on the Galapagos islands?

Their beaks matched their food source

300

The changes in a species over a long period of time as a result of natural selection

Evolution

300

If larger roots allow plants to absorb more water and survive better, how do you predict this population will change over time?

There will be more plants with large roots 

300

True or False: An organism's "fitness" depends largely on the environment that it lives in

True

300

To the frequency of a neutral mutation in a population over time?

Randomly increase and decrease

300

What random occurrence in genes causes many of the variations in a species

Mutation

400
The theory that the organisms that are best "fit" to their environment will survive and reproduce. Hint: Developed by Charles Darwin

Natural Selection

400

There are red and green beetles in a jungle environment. You notice that the green beetles are able to camouflage. What do you predict will happen to this population over time?

The population of green beetles will increase because they can survive and reproduce

400
An unusual cold front has brought snow to an environment that was usually covered in tan sand. Give an example of how populations here may change if these conditions remain

-Thicker fur

-White fur

400

Bird with large beaks are better able to crack nuts while birds with smaller beaks are better able to get bugs. Because of a drought, many of the bugs have moved to a different location. How will this population change over time if these conditions remain?

Large beaks will become more common 

400

If a mutation changes a forest beetle's genes so that it is bright red, what kind of mutation is this? Why?

Harmful- more obvious to predators since it cannot camouflage

500

When two species must change and evolve in response to one another because of their close relationship

Coevolution 

500

Why did giraffes evolve to have long necks?

Longer necks allowed giraffes to get more food, survive, and reproduce
500

Give and explain a trait that would be beneficial in one environment but harmful in another

Let me check!!

500

Fish are only choosing to mate with silver fish and not gold ones. Explain what would happen to each population over time.

Silver- increase

Gold- decrease

500

The following are examples of what type of mutation:

Antibiotic resistant bacteria

Pesticide resistant bugs

Beneficial