Concord Consortium
Concord Consortium: Evolution: Variations and Adaptations
Students discover that variation in plants allows some varieties to survive in near-drought conditions. Next, students learn that different types of rabbits prefer to eat different varieties of plants. Students make the connection...
BiologyWise
Biology Wise: Examples That Explain Geographic Isolation
Discusses how unique species evolve when geographic barriers restrict population interbreeding, such as when organisms are confined to an island. Examples are provided.
University of California
University of California Museum of Paleontology: Evolution 101: Gene Flow
An explanation of the process of gene flow and how it can cause genetic variation within a population.
McGraw Hill
Mc Graw Hill: Genome Evolution
Take this post test to see how much you know about genome evolution.
McGraw Hill
Mc Graw Hill: Genome Evolution
Find out what you know about genome evolution by taking this pre test.
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Using Dna to Trace Human Migration
A slideshow tracing human migration to show that "all living humans originated from populations of ancestors who migrated out of Africa less than 100,000 years ago. Learn how scientists have used genetic markers to trace the migration...
NC State University
North Carolina State University: Resistance to Pesticides
Although pesticides are designed to kill pest populations, they are seldom 100% effective -- a few individuals usually survive and reproduce. These survivors may have a behavioral trait that helps them avoid the pesticide, a biochemical...
BiologyWise
Biology Wise: Definition and Examples of Stabilizing Selection
Explains what stabilizing selection is and how this type of natural selection actually limits genetic diversity in a population. Presents examples of stabilizing selection in different plants and animals.
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