ISSN:
1550-7408
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
SYNOPSIS. Tritiated thymidine and autoradiographic methods were used to investigate the cyclic DNA synthesis in the culture form of Trypanosoma mega. It was found that the mean generation time of 18.9 hours comprises four successive periods: G1, S, G2 and D. The interphase lasts through the first three. S is the phase of DNA synthesis of both the nucleus and the kinetonucleus (kinetoplast). The cell divides during D, beginning with the division of the kinetonucleus. The respective durations of G1, S, G2 and D are 8.5, 7, 2 and 1.4 hours. The close time relationship between the two DNA synthesizing bodies is considered as bringing support to the old theory of the Binucleates and the possible genetic function of the kinetonucleus is suggested.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1550-7408.1962.tb02607.x
