Evolution and Natural Selection

In natural selection, the selective agent is the

• humans
• mutations
• breeders
• environment

what did Charles Darwin observe in finch populations of the Galapagos Islands off the coast of South America?

• different species on different islands
• all species on one of the islands
• identical species on all the islands
• the same species as North America

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 process in which humans breed organisms for certain traits?

• natural selection
• inheritance
• artificial selection
• descent withOUT modification

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

• increase in number
  
• become extinct
  

Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• analogous structures
• homologous structures
• fossil structures

This mechanism of evolution occurs when populations migrate.

• Extinction
• Gene flow
• Genetic drift
• Natural Selection

Who is the father of evolution?

• Darwin
• Mendel
• Newton
• Einstein

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

• DNA studies
• embryology 
• extinction
• fossil record

Why do embryologist study embryos?

• to see if they are related
• to understand adaptations
• to determine the age
• to learn what parents are vestigial