ENL Evolution

Change over time...

• Evolution
• Nucleotide 

Charles Darwin came up with this theory 

• Natural Selection
• Mutation

To adjust to a changing environment

• Mutation
• Adapt

_________ characters may or may not be similar between two organisms but they developed from a common ancestor.

• homologous
• analogous
• cladistic
• phylogenic

________ structures are reduced in size or function.

• vestigial
• homologous
• cladistic
• phylogenic

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

• Ancestor
• Skeleton
• Fossil
• Imprints

Structures with the same parts have different functions; suggests that organisms share a common ancestry

• vestigial structures
• homologous structures
• adaptive radiation
• fossil

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

Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

• The function of these bones is the same in all animals
• They live in similar environments
• They have a common ancestor
• All organisms resemble humans