From: Chromosome Replication
Copyright © 1994, Bruce Alberts, Dennis Bray, Julian
Lewis, Martin Raff, Keith Roberts, and James D Watson.
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.
Alberts B, Bray D, Lewis J, et al. Molecular Biology of the Cell. 3rd edition. New York: Garland Science; 1994.
Molecular Biology of the Cell. 3rd edition.
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Figure 8-38Large numbers of replication origins operate in rapidly dividing embryonic nuclei
This electron micrograph of spread chromatin from an early Drosophila embryo shows that replication bubbles ( arrows) are extremely closely spaced. Only about 10 minutes elapse between some of the successive nuclear divisions in this embryo. Since the replication origins used here are so closely spaced (separated by a few thousand nucleotide pairs), it should require only about a minute to replicate all the DNA between them. (Courtesy of Victoria Foe.)
- Figure 8-38, Large numbers of replication origins operate in rapidly dividing em...Figure 8-38, Large numbers of replication origins operate in rapidly dividing embryonic nuclei - Molecular Biology of the Cell
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