Genetic variation can arise from a random change in the DNA of a gene.  The change is called a(n)

• mutation
• gene flow
• gene pool
• allele

Which statement best describes the process of evolution?

• Populations can survive in different locations on earth
• Environmental conditions limit the number of species on Earth
• Populations grow when resources are abundant
• The traits of a species can change over time

Darwin theorized that individuals having an advantage due to their traits or abilities will be more likely to survive and reproduce.  This theory is known as

• evolution
• speciation
• adaptation
• natural selection

What characteristic did Darwin observe about the finches on the Galapagos Islands?

• Their feathers 
• Genotypes 
• Their beaks
• Their body sizes

Remains of ancient organisms are called

• Extinctions
• Fossils
• Mutations
• Variations

the hind leg bones in a whale are examples of

• homologous structures
• analogous structures
• fossils
• vestigals

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

• variation

• adaptation

• homologous structure

• vestigial structure

What is the study of organisms at the early stages of development?

• DNA studies
• embryology 
• extinction
• fossil record

What is this an example of?

• vestigial structures
• embryology
• homologous structures
• fossil record

The disappearance of a species is called

• Evolution

• Extinction

• Migration

• Mutation