GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Bacteria are resistant to anitbiotics
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Genes inside the plasmids cause production of desired molecules and bacteria reproduce rapidly meaning plenty of the molecule is made
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Bacteria reproduce slowly so less of the drug is made
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To store them until they are needed
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Detailed explanation-1: -Plasmids can be used as vectors to carry foreign DNA into a cell. Once inside the cell, the plasmid is copied by the host cell’s own DNA replication machinery. In the lab, plasmids are specifically designed so that the DNA they contain will be copied by bacteria.
Detailed explanation-2: -Often, the genes carried in plasmids provide bacteria with genetic advantages, such as antibiotic resistance.
Detailed explanation-3: -A plasmid typically contains an antibiotic resistance gene, which allows bacteria to survive in the presence of a specific antibiotic. Thus, bacteria that took up the plasmid can be selected on nutrient plates containing the antibiotic.
Detailed explanation-4: -Plasmids are used in genetic engineering to transfer foreign genetic material into different types of cells. The foreign DNA fragment is inserted into the plasmid and the recombinant DNA molecule is transformed into the recipient cell. The transformed cells are selected by the antibiotic resistance of the used plasmid.