Evolution For Dummies (For Dummies) by Greg Krukonis

By Greg Krukonis

This present day, most schools and universities provide evolutionary research as a part of their biology curriculums. Evolution For Dummies will tune a category during which evolution is taught and provides an aim clinical view of the topic. This balanced advisor explores the historical past and way forward for evolution, explaining the ideas and technological know-how at the back of it, providing case reports that help it, and evaluating evolution with rival theories of production, resembling clever layout. It will also determine the symptoms of evolution on the earth round us and clarify how this concept impacts our daily lives and the longer term to come back.

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Microevolution, because it happens on a time scale that we’re able to observe, tends to be a bit easier for us to wrap our brains around than macroevolution. ߜ Macroevolution refers to the results of the evolutionary process typically among species (or above the species level; see Chapter 11) over long periods. Nothing is different about the process; nothing special is happening. Macroevolution simply refers to the larger changes researchers can observe when evolution has been going on for a longer time and involves processes such as extinction, which may have little to do with microevolution.

All other things being equal, the next generation will have a higher proportion of the brown-eyed gene than the previous generation. Evolution has happened, but not as a result of natural selection. ) For more information on how chance factors into the evolutionary process, head to Chapter 6. I can imagine what you must be thinking: Two deer more or less are hardly going to make much of a difference. In a large population, you’d be right, but in a small population, a few deer more or less can make a difference that would be noticed in the future.

We know that DNA is a long molecule made up of a string of four subunits (four letters); that the order of these letters, commonly called the DNA sequence, stores genetic information; and that a gene is a particular sequence of a particular piece of an organism’s DNA. ߜ We’ve developed the chemical techniques that allow researchers to determine the exact sequence of an organism’s DNA. As a result of this ability to work with DNA, scientists have a much better handle on the details of the evolutionary process.

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