Abstract
Replication times for all important chromosome bands, of both types R and Q (277 structures) are analysed. — The R-bands form a group of structures whose DNA replicates during the early S-phase, while the DNA situated in the Q-bands replicates during the late S-phase. — There may not exist overlapping between replication times of these two types of structures. — The widest R-bands are those which are the earliest to replicate; in general, the most intense Q-bands are those which are the latest to replicate. Especially among these last ones, a certain asynchronism exists between the replication times. Finally the heterochromatin of chromosomes 1, 16 and Y and of the short arms of the acrocentrics could contain two types of DNA which replicate at different times.
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Dutrillaux, B., Couturier, J., Richer, CL. et al. Sequence of DNA replication in 277 R- and Q-bands of human chromosomes using a BrdU treatment. Chromosoma 58, 51–61 (1976). https://doi.org/10.1007/BF00293440
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DOI: https://doi.org/10.1007/BF00293440