Unit 8 Evolution Test Review

What organism was necessary for oxygen to accumulate in the Earth's early atmosphere?

• DNA

• plants and other photosynthetic organisms

• amino acids

• carbon

Which of the following describes evolution?

• change in allele frequencies in a species over time

• selectively breeding for specific traits

• changing from one species to another

• accumulating changes in characteristics during an organism's lifetime

The Florida panther population was reduced to only 6 individuals, but rebounded in number to create a genetically unique population. What is this process called?

• the founder effect

• natural selection

• the bottleneck effect

• artificial selection

A colony of 100 deer swam from the mainland of Florida to the lower keys and established a new population. Over time their genetic makeup would be determined by which type of genetic drift?

• founder effect

• bottleneck effect

• natural selection

• artificial selection

Structures that are similar in structure but different in function are:

• Homologous structures

• Analogous structures

• Vestigial structures

• Unnecessary structures

Structures that share a similar function but are very different in structure and are not inherited from a common ancestor are:

• Homologous structures

• Analogous structures

• Vestigial structures

• Unnecessary structures

Structures that do not appear to have a function and are "left over" from a past ancestor are:

• Homologous structures

• Analogous structures

• Vestigial structures

• Artificial structures

According to Charles Darwin's theory of natural selection, individuals that tend to survive are

• best suited to the environment in which they live

• an important food source for humans

• closely related to humans

• unable to reproduce

Structures that are inherited from a common ancestor are:

• homologous structures

• analogous structures

Which term best describes the structures in the figure above?

• Analogous structures

• Homologous structures

• Vestigial structures