Ackermann and Colleagues (2003)investigated Senescence in Bacteria

.Ackermann and colleagues (2003) investigated senescence in bacteria.What do the following results demonstrate and why are they surprising given evolutionary theory on aging?

A) Bacteria do not senesce. Every organism should show trade-offs between fitness and longevity.
B) Bacteria do not senesce. Extrinsic mortality is not constant throughout the life of a bacterial cell.
C) Bacteria do senesce. Pleiotropy is the rare exception in simple bacterial genomes.
D) Bacteria do senesce. Cell propagation and reproduction are the same in bacteria.

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