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Medium-dependent variation of deoxyribonucleic acid segregation in Escherichia coli.

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  • Research Article


The degree to which deoxyribonucleic acid segregates nonrandomly has been investigated for Escherichia coli B/r growing in different media. The degree of nonrandom segregation observed is dependent on the medium, with segregation becoming less random as the growth rate decreases. This indicates that there must be some varying probabilistic component to the segregation process. A probabilistic modification of the Pierucci-Zuchowski model is proposed as well as a probabilistic model, in which it is proposed that deoxyribonucleic acid strands segregate, with a probability greater than 0.5, in the same direction (toward the same pole) as at the previous cell division.

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