Evidence of evolution

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

• vestigial structures
• homologous structures
• adaptive radiation
• fossil

Study of unborn organisms to see similarities in development

• natural selection
• Embryological Development

• speciation
• evolution

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

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

If modern organisms have a lot of homologous structures, what conclusion might make make about those organisms?

• They are reptiles
• The organisms are not related

• The organisms have a common ancestor

Which of the following is the collection of life's remains found in sedimentary rock?

• natural selection

• homologous structures

• Charles Darwin

• the fossil record

The koala and kangaroo are both marsupials and incubate their young in a pouch. This provides evidence that they---

• are descended from a common ancestor
• Have very similar skeletal structures
• belong to the same species
• must range great distances to eat

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 hind (back) leg bones in this whale are:

• Homologous

• Vestigial

• Analogous

• Great for walking on the beach

A structure that has been reduced in size and is no longer used by an organism is referred to as:

• vestigial
• analogous
• homologous
• mathematical