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Concepts in Biology 14th Edition by David Bailey Eldon Enger, Enger, Frederick Ross
Edition 14ISBN: 978-9339204358Concepts in Biology 14th Edition by David Bailey Eldon Enger, Enger, Frederick Ross
Edition 14ISBN: 978-9339204358 Exercise 1
Microevolution and Sexually Transmitted Diseases
Penicillin was introduced as an antibiotic in the early 1940s. Since that time, it has been found to be effective against the bacteria that cause gonorrhea, a sexually transmitted disease. The drug acts on dividing bacterial cells by preventing the formation of a new protective cell wall. Without the wall, the bacteria can be killed by normal body defenses. As time passed, a new strain of this disease-causing bacterium developed. This bacterium produces an enzyme that metabolizes penicillin. How can gonorrhea be controlled now that this organism is resistant to penicillin? How did a resistant strain develop? Include the following in your consideration: DNA, enzymes, selecting agents, and gene-frequency changes.
Penicillin was introduced as an antibiotic in the early 1940s. Since that time, it has been found to be effective against the bacteria that cause gonorrhea, a sexually transmitted disease. The drug acts on dividing bacterial cells by preventing the formation of a new protective cell wall. Without the wall, the bacteria can be killed by normal body defenses. As time passed, a new strain of this disease-causing bacterium developed. This bacterium produces an enzyme that metabolizes penicillin. How can gonorrhea be controlled now that this organism is resistant to penicillin? How did a resistant strain develop? Include the following in your consideration: DNA, enzymes, selecting agents, and gene-frequency changes.
Explanation
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If a gonorrhea strain is resistant to pe...
Concepts in Biology 14th Edition by David Bailey Eldon Enger, Enger, Frederick Ross
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