Natural Selection and Evolution

What is evolution? 

• A change in allele frequencies over time 
• Biggest animals surviving 
• Strongest animals surviving more than weaker animals 
• Animals working to become perfect 

What was the name of the scientist who had the theory of evolution?

• Lamarck
• Einstein
• Washington
• Darwin

What are the evidences for Evolution?

• Fossil Records
• Embryology
• Similar body structure
• All the above

The frequency of alleles (the genes) in a population doesn't change over a long period of time.  This population is evolving.

• True
• False

Individuals with favorable traits survive, reproduce, and pass their traits onto their offspring.  This is called

• Mutation
• Adaptation
• Evolution
• Natural Selection

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

• Because organisms with those traits 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 (learned) phenotype.

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 wings of an ostrich

What is speciation?

• combining of two species to form one with different traits
• isolation that affects mating behaviors
• timing of mating that prevents normal sexual selection
• The formation of a new species 

This image shows that 

• These animals have no simliarities in their structures. 
• two different species may have evolved from a common ancestor. 
• These animals are from the same species. 
• These animals likely evolved from different ancestors due to their differences. 

Tags

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_{What type of selection is shown?}

• DIrectional
• Stabilizing
• Disruptive

Tags

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