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29 March, 19:22

The restriction enzymes of bacteria protect the bacteria from successful attack by bacteriophages, whose genomes can be degraded by the restriction enzymes. the bacterial genomes are not vulnerable to these restriction enzymes because bacterial dna is methylated. this situation selects for bacteriophages whose genomes are also methylated. as new strains of resistant bacteriophages become more prevalent, this in turn selects for bacteria whose genomes are not methylated and whose restriction enzymes instead degrade methylated dna. over the course of evolutionary time, what should occur

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  1. 29 March, 19:48
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    The correct answer is; Methylated and nonmethylated strains should be maintained among both bacteria and bacteriophages, with ratios that vary over time. Restriction enzyme are protein produced by bacteria that cleaves DNA at specific sites along the molecule. In bacterial cell, restriction enzymes cleave foreign DNA, thus eliminating infecting organisms.
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