Unit 7

Mutations are important because they bring about

• death of the organism in which they develop
• genetic variation needed for a population to evolve
• benefits for the individual, not for the population
• Hardey-Weinberg equilibrium within a population

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NGSS.HS-LS4-2

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What is the term for a feature that allows an organism to survive better in its environemtn?

• variation

• adaptation

• homologous structure

• vestigial structure

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Natural selection results in change over time by acting on traits that are

• heritable
• new
• mutated 
• better than the best

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NGSS.HS-LS3-2

NGSS.HS-LS4-3

This is the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock.

• Competiton
• Extinction
• Evidence
• Fossil

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Adaptations are:

• physical or behavioral tendencies.

• physical or behavioral characteristics that help an organisms survive and reproduce.

• physical or behavioral characteristics that do not help the organism in any way.

• genetic mutations that have gone wrong.

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NGSS.HS-LS4-4

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Which term refers to the process by which individuals that are better suited to the environment survive and reproduce therefore passing down their genes to their offspring? 

• Evolution 
• Variation 
• Adaptation
• Natural Selection 

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NGSS.HS-LS4-4

Which of the following is NOT an example of natural selection? 

• People selectively breeding hamsters.
• Insect populations developing resistance to certain pesticides.
• Bacteria becoming resistant to antibiotics.
• Male birds of certain species developing colorful feathers to attract female mates.

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NGSS.HS-LS4-4

What do we call similar physical structures that indicate a link to a common ancestor?

• absolute dating
• adaptations
• gradualism
• homologous structures

Which of the following is an example of a vestigial structure?

• the wings of a red-tailed hawk
• the hind limbs of a house cat
• the fins of sharks
• the tailbone of a human

The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?

• Fossil A and C are the same age
  
• Fossil B is older than fossil C
• Fossils A is older than fossil B
• Fossil D is older than fossil C