Premium
The Full Schedule of Macronuclear DNA Synthesis is Not Required for Cell Division in Paramecium tetraurelia1 1
Author(s) -
RASMUSSEN COLIN D.,
CHING ADA S. L.,
BERGER JAMES D.
Publication year - 1985
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1985.tb03071.x
Subject(s) - dna synthesis , paramecium , cell division , microbiology and biotechnology , dna , mitosis , biology , cell cycle , division (mathematics) , cell , genetics , arithmetic , mathematics
Macronuclear DNA synthesis normally continues until late in the cell cycle in Paramecium; however, blockage of macronuclear DNA synthesis after 0.72 in the cell cycle does not alter the occurrence or timing of the subsequent cell division. When DNA synthesis is blocked after cells have reached the transition point, macronuclear DNA content at the following division is reduced to about 75% of the normal level. The point at which macronuclear DNA synthesis is no longer required for division corresponds to the beginning of micronuclear mitosis and the early stages of oral morphogenesis.