Chiasma frequency
A Demonstration of a 1:1 Correspondence Between Chiasma Frequency and Recombination Using a Lolium perenne/Festuca pratensis Substitution
... study chiasma formation in a single marked ...and chiasma frequency counts give a predicted map length for this bivalent of 76 ...the chiasma frequency ...between chiasma ...
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Variation in Chiasma Frequency Among Eight Accessions of Arabidopsis thaliana
... in chiasma frequency or recombination locations of chiasmata in bivalents at late prophase I or ...chromosomes. Chiasma/recombination frequency, Other indications of quantitative genetic ...
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CHIASMA FREQUENCY AND DISTRIBUTION IN A MAIZE FAMILY SEGREGATING FOR K10 AND TRISOMY 10
... A previous study of KIO effects on chiasmata (WARD 1976) was limited to metaphase I bivalents, and showed an increase in total chiasma frequency over that in controls, plu[r] ...
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RELATIONSHIP BETWEEN THE NUMBER OF HOMOEOLOGUES, CHIASMA FREQUENCY AND THE FREQUENCY OF TELOSOME PAIRING IN WHEAT
... R E C E N T L Y , DRISCOLL, BIELIG and DARVEY (1979) proposed a theory concern- ing the frequency of occurrence of the possible meiotic configurations of homologous and ho[r] ...
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CYTOGENETICAL STUDY IN SOME ALFALFA CULTIVARS OF IRAN
... in chiasma frequency/distribution, chromosome association and ...total chiasma, mean terminal chiasma, ring and rod bivalents are the most variable meiotic characteristics among the genotypes ...
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CYTOGENETIC STUDY OF GAMMA IRRADIATED LINES OF COTTON (GOSSYPIUM HIRSUTUM L.)
... In total, 26 meiotic characteristics were used in cytogenetic analysis (Table 1). Chiasma frequency and distribution as well as association of chromosomes were determined using 50 pollen mother cells ...
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Differential Chiasma Frequencies in Self-pollinating and Cross-pollinating Species of the Genus Gilia
... Regression of chiasma frequency against stage of meiosis (as represented by total length of chromatin in arbitrary units) in Gilia millefoliata and G.. Chiasma frequ[r] ...
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GENETIC CONTROL OF MEIOSIS IN RICE, ORYZA SATIVA L. III. EFFECT OF DS GENES ON GENETIC RECOMBINATION
... When the mean reduction in recombination frequency was related to the reduction of chiasma frequency, the five ds genes were divided into two types: in one type [r] ...
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EFFECTS OF PERICENTRIC REARRANGEMENTS ON RECOMBINATION IN GRASSHOPPER CHROMOSOMES
... In most cases the individual bivalents cannot be identified with certainty, so that only the total chiasma frequency of the chromosome complement could be ascertained (there are [r] ...
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PREFERENTIAL CHROMOSOME PAIRING IN ALLOTETRAPLOID LYCOPERSICON ESCULENTUMSOLANUM LYCOPERSICOIDES
... The high chiasma frequency in the allotetraploid leads to the interesting con- clusion that the LL pairs of chromosomes in the allotetraploid form (or at least retain unti[r] ...
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A polymerization model of chiasma interference and corresponding computer simulation.
... Observed No. The simulation was based on 30,000 tetrads with an initial distribution of three early structures per tetrad, a polymerization start proba- bility of 0.02, and p[r] ...
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B-CHROMOSOME-STIMULATED CROSSING OVER IN MAIZE
... He compared the chiasma frequencies of male grasshoppers bearing B’s with those of individuals lacking B’s and found a significantly higher frequency of chiasmata among th[r] ...
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CYTOGENETICS OF DISOMICS, MONOTELO- AND MONOISODISOMICS AND ml1 st1 MUTANTS OF CHROMOSOME 4 OF COTTON
... Synapsis and chiasma formation would occur initially between the two is0 arms, followed by synapsis and chiasma in the proximal regions, most frequently between the normal chro- mos[r] ...
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The Relationship Between Count-Location and Stationary Renewal Models for the Chiasma Process
... of chiasma formation at meiosis as stationary renewal ...one chiasma per ...the chiasma process that can also be expressed as stationary renewal ...
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NORMAL SEGREGATION WITHOUT CHIASMATA IN FEMALE DROSOPHILA MELANOGASTER
... But are crossing over and the resultant chiasmata invariably necessary for orderly segregation in at least one sex of these forms? If not, the chiasma hy- pothesis of met[r] ...
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An analysis of interference in the fission yeast Schizosaccharomyces pombe.
... The evaluation of three-point crosses at the tetrad and random spore level leads to the conclusion that both chiasma and chromatid interference are absent in the f[r] ...
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ANOMALOUS CHROMOSOME PAIRING IN THE MALE DROSOPHILA PSEUDO-OBSCURA
... CHROMOSOME PAIRING IN DROSOPHILA 113 While, in the male, chiasma formation is suppressed or regulated so as to give no visible crossing over, in the female presumably on[r] ...
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CHIASMA DISTRIBUTION AND SEGREGATION OF MARKERS IN CHROMOSOME 2 OF THE TETRAPLOID TOMATO
... It is concluded that the tetraploid segregation ratios for markers on chromosome 2 do not show differences and that the absence of differences is due to the asymmetric st[r] ...
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Chiasma interference as a function of genetic distance.
... Fraction of C’s that are Cx estimated by correcting data on the assumption of a fixed number of Co’s between neighboring Cx’s.. Inclusive coefficient of coincidence for adjacent in-[r] ...
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CHIASMA TERMINALIZATION IN A STRUCTURAL HETEROZYGOTE IN SECALE
... The second cell contained a 5- chromosome chain (part of the naturally occurring association), three closed bivalents, one open bivalent, and a univalent. Terminaliza[r] ...
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