Natural Selection, Adaptation, and Evolution

Two organisms that are closely related would have

• very similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence

The differences among a species, like different bird beaks, are called

• genes.
• variations.
• traits.
• theories.

Darwin wrote that organisms with traits that are best suited to the environment will ________________

• increase in number
  
• become extinct
  

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

In your lab, how would your describe multiple birds feeding from the same food source at the same time?

• competition

• evolution

• natural selection

• variation

In your lab, what did the different kitchen utensils represent?

• variations in bird beaks

• food sources

• evolution

• pickles

A remnant or trace of an organism from the past is called a _______.

• Ancestor
• Skeleton
• Fossil
• Imprints

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.

What is an organism that has similar characteristics and can reproduce?

• species
• organism
• embryology
• vestigial 

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