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Overview: Students learn how artificial selection can be used to develop new dog breeds with characteristics that make the dogs capable of performing a desirable task. Author/Source: Collins, Jennifer Grade level: 13-16 Time: 90 minutes Concepts: Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details. There is a fit between organisms and their environments, though not always a perfect fit. An organism's features reflect its evolutionary history. Some traits of organisms are not adaptive. There is a fit between the form of a trait and its function, though not always a perfect fit. Artificial selection provides a model for natural selection. People selectively breed domesticated plants and animals to produce offspring with preferred characteristics. Evolution can sometimes be directly observed. Inherited characteristics affect the likelihood of an organism's survival and reproduction. Depending on environmental conditions, inherited characteristics may be advantageous, neutral, or detrimental. Our understanding of life through time is based upon multiple lines of evidence. Scientists use experimental evidence to study evolutionary processes. Scientists use artificial selection as a model to learn about natural selection. Teacher background: Artificial Selection Natural Selection

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