Hostname: page-component-848d4c4894-tn8tq Total loading time: 0 Render date: 2024-07-01T05:30:06.908Z Has data issue: false hasContentIssue false

Chromosome pairing in altered constitutions and models of synapsis and crossing-over

Published online by Cambridge University Press:  14 April 2009

Marjorie P. Maguire
Affiliation:
Genetics Foundation, University of Texas, Austin, Texas

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.

Metaphase trivalent frequencies from a number of new chromosomal constitutions (various combinations of maize chromosome 2-Tripsacum homeologue primary and secondary interchanges) are presented and compared to previous findings from similar material. It is suggested than an underlying direct relationship may exist between extent of gentic map present in duplicate and triplicate and expectation from a sharing of map probability of crossing-over among all homologues. Theoretical considerations are discussed.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1968

References

REFERENCES

Darlington, C. D. (1934). The origin and behavior of chiasmata. VII. Zea mays. Z. indukt Abstamm.- u. VererbLehre 67, 96114.Google Scholar
Darlington, C. D. (1941). The causal sequence of meiosis. II. Central points and crossing-over potential in a triploid Fritillaria. J. Genet. 41, 3548.CrossRefGoogle Scholar
Dobzhansky, H. (1934). Studies on chromosome conjugation. III. Behavior of duplicating fragments. Z. indukt. Abstamm.- u. VerebLehre 68, 134162.Google Scholar
Fabergé, A. C. (1942). Homologous chromosome pairing: The physical problem. J. Genet. 34, 121145.CrossRefGoogle Scholar
Feldman, M. (1966). The effect of chromosomes 5B, 5D and 5A on chromosomal pairing in Triticum aestivum. Proc. natn. Acad. Sci. U.S.A. 55, 14471453.CrossRefGoogle ScholarPubMed
Feldman, M., Mello-Sampayo, T. & Sears, E. R. (1966). Somatic association in Triticum sestivum. Proc. natn. Acad. Sci. U.S.A. 56, 11921199.Google Scholar
Green, M. M. (1962). The effects of tandem duplications on crossing over in Drosophila melanogaster. Genetica 33, 154164.CrossRefGoogle ScholarPubMed
Grell, R. F. (1967). Pairing at the chromosomal level. J. cell. comp. Physiol. 70 (Suppl. 1), 119146.Google Scholar
Maguire, M. P. (1964). Crossing over and anaphase I distribution of the chromosomes of a maize interchange trivalent. Genetics 49, 6980.CrossRefGoogle ScholarPubMed
Maguire, M. P. (1965). The relationship of crossover frequency to synaptic extent at pachytene in maize. Genetics 51, 2340.Google Scholar
Maguire, M. P. (1966). The relationship of crossing over to chromosome synapsis in a short paracentric inversion. Genetics 53, 10711077.Google Scholar
Maguire, M. P. (1967). Evidence for homologous pairing of chromosomes prior to meiotic prophase in maize. Chromosoma 21, 221231.CrossRefGoogle Scholar
Pritchard, R. H. (1960). Localized negative interference and its bearing on models of gene recombination. Genet. Res. 1, 124.CrossRefGoogle Scholar
Rhoades, M. M. (1931). A new type of translocation in Drosophila melanogaster. Genetics 16, 490504.CrossRefGoogle ScholarPubMed
Roth, T. F. (1966). Changes in the synaptinemal complex during meiotic prophase in mosquito oocytes. Protoplasma 61, 346386.CrossRefGoogle Scholar
Sved, J. A. (1966). Telomere attachment of chromosomes. Some genetical and cytological consequences. Genetics 53, 747756.Google Scholar