Evolution in stationary phase: novelty |
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As cultures age, cells
are competing against one another for access to nutrients. This
competition is fierce. As you saw in ON
GROWTH by day 3, over 99% of the cells in the culture
will die. To determine whether the surviving cells in a starved population have an inheritable advantage over unstarved cells for survival under starvation conditions we will set up a competition experiment. Take an aliquot from an aged (10 day old) nalR or strR cultures and mix it with an equal number of cells from a fresh 1 day old stationary culture of the other strain (mix old nalR with young strR or visa versa). Now tract the relative frequencies of the two strains over the next two months. |
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Lab report : part 2
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Use Wikipedia |
19 March 2005 revised
21-Mar-2013
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