Chapter 10 Outline

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Outline for Chapter 10

Define the following terms…

What is Evolution? (Section 10.1, pp 222-224)
Figures to review: 10.1, 10.2

Biological evolution
• Biological evolution is defined as any genetic change in a population that is inherited over several generations. These changes may be small or large, noticeable or not so noticeable.

• the major subdivision of a genus or subgenus, regarded as the basic category of biological classification, composed of related individuals that resemble one another, are able to breed among themselves, but are not able to breed with members of another species.

Biological populations
• a group of organisms, of the same species, occupying a defined area during a specific time.

Natural selection
• A process in nature in which organisms possessing certain genotypic characteristics that make them better adjusted to an environment tend to survive, reproduce, increase in number or frequency, and therefore, are able to transmit and perpetuate their essential genotypic qualities to succeeding generations.

• Evolution involving small-scale changes, i.e. within the species level, occurring over a short period of time that results in the formation of new subspecies.

scientific theory
• A concept that has been well tested, and is accepted as an explanation to a wide range of observations.

theory of evolution
• a scientific theory of the origin of species of plants and animals

common descent
• A group of organisms is said to have common descent if they have a common ancestor. In modern biology, it is generally accepted that all living organisms on Earth are descended from a common ancestor or ancestral gene pool.

Examining the evidence for Common Descent (Section 10.3, pp 229-241) Figures to review: 10.9, 10.10, 10.11, 10.13, 10.15, 10.16, 10.19; Table 10.1

Biological classification system
• A collection of...
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