Evidence for Evolution Overview Review

The process by which populations slowly change over time is called__________

• selective breeding

• adaptation

• evolution

• speciation

Choose the two main points of Darwin's theory of evolution as he presented it in "On the Origin of Species."

• All life is related via descent with modification

• Genetic drift leads to genetic variation

• Migration is the movement of genes from one population to another

• Populations evolve by the process of natural selection.

• Species are affected by a struggle for existence

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

The study of the early stages of development that is one evidence of evolution is:

• Homologous Structures

• Vestigial Organs

• Embryology

The similarities of the bones in the diagram provide evidence that--

• The organisms shown have the same genetic diseases

• All vertebrate species have identical forelimbs

• The organisms shown lived in the same natural environment

• The organisms shown may have developed from a common ancestor

According to this data, the unknown bacterial species is most closely related to:

• Species I

• Species II

• Species III

• Species IV

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

• vestigial structures

• homologous structures

• adaptive radiation

• fossil

How do fossils provide evidence that evolution has happened on Earth?

• Fossils show how the sizes of certain animals has changed drastically over millions of years

• Fossils show how life forms present today are different than those from the past

• Fossils show that some species have gone extinct

• Different sedimentary rock layers provide evidence for how the environment has changed over time

Structures that are very different in structure or anatomy but have similar functions such as the wings of a bird and a butterfly.

• Vestigial Structures

• Analogous Structures

• Homologous Structures

• Cladogram

What is this an example of?

• Homologous structure

• Analogous structure

• Vestigial organs

• Functional adaption