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Unformatted text preview: bacteria multiply and become more common. Eventually the entire infection evolves into a resistant strain. Visit http://evolution.berkeley.edu/evolibrary/article/_0/berstrom_03 . There are wide spectrum antibiotics which wipe out many types of bacteria. Viruses are not affected by antibiotics. If an antibiotic is prescribed while having a viral infection you may risk further damage to your organism. Through artificial selection the width of flowering stalks present in plants can change drastically. This is caused by people choosing the individual with the largest and compact flowering stalks, and breeding them (this is repeated many times). A fruit fly is a model organism due to its availability and no rules for the treatment of these organisms....
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- Spring '11