Esteban Toro and Lucy Shapiro
-Author Affiliations
Department of Developmental Biology, Beckman Center, Stanford University School of Medicine, Stanford, California 94305
Correspondence:etoro@stanford.edu
Abstract
Bacterial chromosomes are generally ∼1000 times longer than the cells in which they reside, and concurrent replication, segregation, and transcription/translation of this crowded mass of DNA poses a challenging organizational problem. Recent advances in cell-imaging technology with subdiffraction resolution have revealed that the bacterial nucleoid is reliably oriented and highly organized within the cell. Such organization is transmitted from one generation to the next by progressive segregation of daughter chromosomes and anchoring of DNA to the cell envelope. Active segregation by a mitotic machinery appears to be common; however, the mode of chromosome segregation varies significantly from species to species.
Copyright © 2010 Cold Spring Harbor Laboratory Press; all rights reserved
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Este é o mundo da complexidade biótica que Darwin, limitado pelos recursos tecnológicos de sua época, não pode contemplar e nem se maravilhar diante do design inteligente encontrado até em 'simples' bactérias...
Fui, cada vez mais convencido do Design Inteligente. Pode vir a nova teoria geral da evolução - a SÍNTESE EVOLUTIVA AMPLIADA, mas será mais um remendo epistemológico ad hoc se não incorporar as teses de complexidade irredutível de sistemas bióticos e da informação complexa especificada de maquinarias mitóticas como essas.
