Natural Selection

Multiple Choice

How do you "win" at natural selection?

• survive

• go extinct

• survive & reproduce

Multiple Choice

What word describes a trait that helps an organism survive in its environment?

• natural selection

• mutation

• camouflage

• adaptation

Multiple Choice

Which organisms are most likely to survive?

• the best adapted
• the fastest
• the strongest
• the most domesticated (tamed)

Multiple Choice

Natural selection results in change in a population's _____________ traits over time.

• inherited

• acquired

Multiple Choice

Which of the following is a factor in natural selection?

• Individuals of species compete with one another to survive.
• All species are genetically diverse.
• Individuals better able to adapt to changes leave more offspring.
• All are correct 

Multiple Choice

What is another name for natural selection?

• survival of the smartest
• survival of the fastest
• survival of the biggest
• survival of the fittest

Multiple Choice

Why is the mouse population changing over time?

• The light mice can reproduce more successfully than the dark mice
• The hawks eat more dark mice than light mice because the dark mice taste better
• The hawks eat more light mice than dark mice because they can see the light mice more easily
• The hawks eat more dark mice than light mice because they can see the dark mice more easily

Multiple Choice

When an environment changes faster that an species can adapt, the most likely outcome is...

• ...biological evolution.
• ...voluntary mutation
• ...species extinction
• ...selective breeding

Multiple Choice

The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?

• Dark moth
• Light moth
• Both will be equally successful
• Neither will be successful

Multiple Choice

These moths are all the same species. The differences between their wings is an example of ________________

• Natural Selection
• Variation
• Homeostasis
• Extinction

Artificial Selection

Does not occur naturally.

Humans influence or choose what traits are passed down to offspring.

3 types can occur:

• Selective breeding

• Inbreeding

• Hybridization

Artificial Selection

Selective breeding- organisms with desirable traits are made to reproduce to enhance or ensure the traits are passed down.

Inbreeding- This occurs when humans make offspring reproduce to enforce the desired trait. When the same population of an organism are bred together, more offspring will get recessive genes that cause disease or deformity.

Hybridization- breeding organisms with different desired traits to create offspring with both traits

Multiple Choice

Which of the following explains adaptation.

• An individual organism changes to meet its needs in the environment. These changes pass down to their offspring.
• The species as a whole changes their characteristics.
• Beneficial traits allow organism to survive and pass on those traits
• New characteristics arise in a species as needed.  If these traits are helpful, they are passed down.

Multiple Choice

1. The process of choosing parent organisms for desired characteristics is called

• natural selection

• Artificial selection

• random selection

• genetic manipulation

Multiple Choice

What is an example of artificial selection?

• Letting dogs choose their own mate

• Letting plants pollinate on their own

• Crossing a labrador and a poodle to create a labradoodle

Multiple Choice

Adaptations can be:

• camouflage

• ability to survive cold weather

• hunting skills

• all of the above

Multiple Choice

Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.
• Because they come from dominant alleles.
• Because they come from recessive alleles.
• Because the trait is an acquired phenotype.

Multiple Choice

Definition: natural selection

• inherited characteristic that increases chances of survival
• organisms with traits well suited to their environment survive and reproduce at a greater rate
• a growing population causes a scarcity of resources
• differences in the DNA sequence

Multiple Choice

Individuals undergo evolution.

• True

• False