Natural Selection

What is a mutation?

• When animals have extra legs

• When a frog changes from a tadpole

• When genes or DNA have been alterd or changed

• When RNA is upside down

Are mutations ALWAYS passed down to offspring?

• Yes

• No

Why do offspring share traits from both parents?

• offspring choose the traits they want

• offspring get 75 percent of the traits from their father

• offspring get 50 percent of each parents DNA

What must organisms do when an environment changes?

• Adapt

• Camoflauge

• become common

• fight

Which is NOT an example of an adaptation?

• A bird's beak allows it to crack open hard nuts.
• A zebra's stripes allow it to confuse its predators.
• A frog's large hind legs allow it to jump from danger.
• A cat sleeps on the sofa to avoid the vacuum cleaner.

Which of the following is a term for a group of similar organisms that can reproduce fertile offspring?

• individual
• population
• species
• fossil

What is it called when better adapted organisms survive to pass traits along to their offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

Why did the population of peppered moths in England change from light to dark after the Industrial Revolution?

• Light moths were easy to see against sooty trees and were eaten
• Light moths were killed by soot
• The birds that ate the dark moths were killed by soot
• Dark moths were produced by industrial processes

Which organisms are most likely to survive?

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

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