Evolution Review

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

Genetic differences between organisms of the same species

• Variation
• Adaptation
• Behavior
• Environment

If an organism has a vestigial structure, that structure likely once had a function in a(n)

• close relative
• early ancestor
• unrelated organism
• embryological stage

the hind leg bones in a whale are examples of

• homologous structures
• analogous structures
• fossils
• vestigals

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

What is the advantage of having different shaped beaks?

• To look different from other species.
• To be able to eat the food readily available in the environment.
• To protect itself against predators.
• To protect itself against prey.

This structure could be leftover from an ancestor that had used the structure, and thus could provide evidence of divergent evolution. This structure no longer has a function, but is still present.

• Homologous

• Analogous

• Vestigial