Adv. Biology Week 32

What do we call similar physical structures that indicate a link to a common ancestor?

• absolute dating
• adaptations
• gradualism
• homologous structures

The preserved remains or physical evidence of an organism that lived in the past are called...

• evolutionary features
• fossils
• mutations
• variations

What is it called when an organism is best adapted to its environment, it will survive and reproduce more successfully than other organisms less adapted?

• cloning
• evolution of all species
• natural selection
• selective breeding

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

What do we call a change in a species over time?

• Adaptation

• Evolution

• Extinction

• Environmental influences

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

Study of embryos of various organisms to show a common ancestor because of similarities in development

• natural selection
• embryology
• speciation
• evolution

What does Darwin's theory of evolution suggest?

• species change over time
• extinct species are not related to living species
• different species can interbreed
• animals that look alike are most closely related

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

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