Natural Selection

Which of the following is the correct definition of natural selection?

• The idea that organisms less equipped for their environment tend to survive longer

• The idea that organisms more well equipped for their environment tend to survive longer

• The idea that organisms more well equipped for their environment tend to not survive

• None.

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.

Mutations are a change in what?

• DNA
• tRNA
• genotype
• phenotype

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

• natural selection

• mutation

• camouflage

• adaptation

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

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 and the dark mice will decrease

• The hawks eat more light mice than dark mice because they can see the light mice more easily causing the light mice to decrease

• The hawks eat more dark mice than light mice because they can see the dark mice more easily causing the light mice to increase

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

• Natural Selection
• Variation
• Homeostasis
• Extinction

The Galapagos Islands, a small group of islands off the coast of Ecuador, is home to reptiles such as the giant tortoise and the iguana. The eastern islands are much older than the islands to the west.  Which statement about the origin of these reptiles is best supported by this information?

• The ancestor of each species came from different continents at different times.
• The common ancestors of the reptiles probably came from Equador.
• The common ancestor of each species evolved in Peru and came to the islands at the same time.

Variation in​ (a)   would best help bison survive a harsh winter

• fur thickness
• Leg length
• Hearing quality
• Hoof size

Beak shape depends on...

• where birds live

• who they hang out with

• the diet of the bird

• exercise