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Spicebush swallowtail larvae have markings that make them look like snake, helping to deter predators.
1. Genetic diversity:
Members of a population of organisms are not exactly alike, but have some genetic variation that can be passed on to the next generation ... like these beetles.
2. Natural selection:
In a given environment, some traits are better to have than are others. The
organisms in a population with the more favorable triats are better able to survive and reporduce, passing their favorable genes on to the next generation.
Over time, many generations, the population changes as unfavorable traits are selected against, and favorable traits becomemore prevalent in the population.
You have free access to a large collection of materials used in a college-level introductory Cell Biology Course. The Virtual Cell Biology Classroom provides a wide range of free educational resources including Power Point Lectures, Study Guides, Review Questions and Practice Test Questions.
What Is Biological Evolution? \e-və-lü-shən\
Evolution is a process that results in heritable changes (genetic changes that can be inherited) in a population, spread over many generations. So, what is requred for evolution to happen?
Page last updated: 5/2013
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