Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-25T16:21:44.559Z Has data issue: false hasContentIssue false
  • English
  • Français

The relation of reduplication, recombination, synapsis and chromosome coiling

Published online by Cambridge University Press:  14 April 2009

Marjorie P. Maguire
Marjorie P. Maguire
Affiliation:
Genetics Foundation, University of Texas, Austin, Texas
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

It has long been believed that partially paired chromosomes observed at early meiotic prophase represent synapsis caught in the act and that crossing over must follow or accompany this stage. In contradiction to this it has often been suggested that certain observations (e.g. the occurrence of 3: 1 ratios from individual tetrads of yeast, Neurospora and Aspergillus) are most easily explained if it is assumed that crossing over occurs at the time of reduplication which in turn is now thought to occur during the premeiotic interphase (Taylor, 1957). Another phenomenon, which has been reported in Neurospora, Drosophila and bacteriophage, and apparently must be fitted into any successful model of recombination, is localized negative interference.

Type
Short Notes
Information
Genetics Research , Volume 1 , Issue 3 , November 1960 , pp. 487 - 488
Copyright
Copyright © Cambridge University Press 1960

References

REFERENCES

Darlington, C. D. (1934). The origin and behaviour of chiasmata VII. Zea Mays. Z. indukt. Abstamm.- u. VererbLehre, 67, 96–114.Google Scholar
Darlington, C. D. (1941). The causal sequenoy of meiosis. II. Contact points and crossing-over potential in a triploid Fritillaria. J. Genet. 41, 35–48.CrossRefGoogle Scholar
Dobzhansky, T. (1934). Studies on chromosome conjugation III. Behaviour of duplicating fragments. Z. indukt. Abstamm.- u. VererbLehre, 68, 137–162.Google Scholar
Maguire, Marjorie P. (1957). Cytogenetic studies of Zea hyperploid for a chromosome derived from Tripsacum. Genetics, 42, 473–486.CrossRefGoogle ScholarPubMed
Maguire, Marjorie P. (1960). A study of homology between a terminal portion of Zea chromosome 2 and a segment derived from Tripsacum. Genetics, 45, 195–209.CrossRefGoogle Scholar
Pritchard, R. H. (1960). Localized negative interference and its bearing on models of gene recombination. Genet. Res. 1, 1–24.CrossRefGoogle Scholar
Spurway, H. & Philip, U. (1952). Genetics and cytology of Drosophila subobscura. VII. Abnormal gene arrangements in element A. J. Genet. 51, 198–215.CrossRefGoogle Scholar
Sturtevant, A. H. (1951). A map of the fourth chromosome of Drosophila melanogaster based on crossing over in triploid females. Proc. nat. Acad. Sci., Wash., 37, 405–407.CrossRefGoogle ScholarPubMed
Taylor, J. H. (1957). The time and mode of duplication of chromosomes. Amer. Nat. 91, 209–221.CrossRefGoogle Scholar