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PHOTOSYNTHETIC PROTISTS
Author(s) -
PickettHeaps Jeremy
Publication year - 1974
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.1002/j.1996-8175.1974.tb02808.x
Subject(s) - biology , mitosis , chromosome , photosynthesis , cell , eukaryotic cell , chromosome number , botany , microbiology and biotechnology , biochemistry , gene , karyotype
In my opinion, the problem of accounting for the origin of eucaryotic cells cannot be dissociated from the problem of accounting for the origin of mitosis. A primeval cell type could not become eucaryotic unless it had concurrently evolved a method for reliably partitioning its genetic material. Modern procaryotes perhaps had their genetic material attached to the cell membrane: partitioning may be accomplished by growth of the membrane between attachment points. The only possibly similar mechanism of chromosome separation so far described in eucaryotic cells may be in the dinoflagellates.