segregation distortion
Segregation Distortion of T-DNA Markers Linked to the Self-Incompatibility (S) Locus in Petunia hybrida
... pronounced segregation distortion for any genetic markers that are linked to the ...for segregation distortion of the selectable marker used during transformation with ...Agrobacterium. ...
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Analysis of segregation distortion and its relationship to hybrid barriers in rice
... Segregation distortion (SD) is defined as a deviation of the observed genotypic frequency from expected Mendelian segregation ratios. Genetic elements that cause SD are in- creasingly being ...
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Inbreeding depression and segregation distortion in Chinook salmon: Conservation implications of genetic load
... meiotic distortion in the salmon gametes, and not differential ...the segregation distortion (from the hermaphrodite) is via the egg, these data provide evidence that during meiosis II of oogenesis ...
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Isolation of Ethyl Methanesulfonate-Induced Gametophytic Mutants in Arabidopsis thaliana by a Segregation Distortion Assay Using the Multimarker Chromosome 1
... the segregation distortion is based on conventional ...a distortion of marker possibility is to screen for gametophytic mutants re- frequencies enables us not only to identify genes re- sulting from ...
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ON THE COMPONENTS OF SEGREGATION DISTORTION IN DROSOPHILA MELANOGASTER. III. NATURE OF ENHANCER OF SD
... This Enhancer of Segregation Distortion [E(SD)] locus had not been characterized in earlier studies of SD chromosomes because it cannot be readily separated by reco[r] ...
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Segregation Distortion in Hybrids Between the Bogota and USA Subspecies of Drosophila pseudoobscura
... ratio distortion is caused by sex chromosome segregation distortion in hybrid ...cryptic segregation distortion and show that it involves several regions of the Bogota X chromosome that ...
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A possible case of negative segregation distortion in the SD system of Drosophila melanogaster.
... Models proposed to explain segregation distortion in Drosophila melanogaster are based partly upon the observation that, in the Sd heterozygous Rsp'/Rsp' male, the [r] ...
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SEGREGATION DISTORTION AND CROSSING OVER IN MALES OF DROSOPHILA ANANASSAE. I: PRELIMINARY GENETIC ANALYSIS
... SANDLER, HIRAXZUMI and SANDLER (1959) and SANDLER and HIRAIZUMI (1959, 1960) have made a detailed analysis of this segregation distortion phenomenon in Drosophila melunoga[r] ...
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Negative segregation distortion in the SD system of Drosophila melanogaster: a challenge to the concept of differential sensitivity of Rsp alleles.
... Current models of segregation distortion based on previous experimental results predict that, in the Sd heterozygous Rsp’/Rsps male, the chromosome carrying the sensitive Rsp‘[r] ...
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Molecular Mapping of Segregation Distortion Loci in Aegilops tauschii
... of distortion on chromosome suggested that the gametophytic gene(s) responsible 5D appears to be different from those reported for the for the segregation distortion observed in region 3 is ...
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GENETIC DISSECTION OF SEGREGATION DISTORTION. III. UNEQUAL RECOVERY OF RECIPROCAL RECOMBINANTS
... With respect to their segregation ratio when heterozygous with cn bw, the Cy-bearing recombinants fall into two clear-cut classes: those that exhibit segregation distortion at a lev[r] ...
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Cytogenetic analysis of segregation distortion in Drosophila melanogaster: the cytological organization of the Responder (Rsp) locus.
... The nomenclature of the hetero- chromatic regions of the second chromosome was elabo- rated according to the work of GATTI and PIMPINELLI ( 1 983) and is referred [r] ...
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On the components of segregation distortion in Drosophila melanogaster. V. Molecular analysis of the Sd locus.
... The chromosome walk V. Ten of these phage were assayed by in situ hybridization to polytene chro- mosomes from Drosophila larvae. Identification of the Sd-specific tandem[r] ...
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MEIOTIC DRIVE IN NATURAL POPULATIONS OF DROSOPHILA MELANOGASTER. I. THE CYTOGENETIC BASIS OF SEGREGATION-DISTORTION
... The following properties of SD have been established: (1 ) When heterozygous in a male with a structurally normal chromosome, it is recovered from five to ten times as oft[r] ...
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The independent distorting ability of the Enhancer of Segregation Distortion, E(SD), in Drosophila melanogaster.
... SD represents a complex of three closely linked loci in the centromeric region of chromosome 2: Sd, the Segregation distorter gene; E(SD), the Enhancer of Segregation Distort[r] ...
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GENETIC DISSECTION OF SEGREGATION DISTORTION. I. SUICIDE COMBINATIONS OF SD GENES
... Both Sd and Rsp are necessary to bring about a distortion of the segregation ratio in heterozygous SD males, although the particular degree of distortion exhibited by [r] ...
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Selection of T-DNA-Tagged Male and Female Gametophytic Mutants by Segregation Distortion in Arabidopsis
... phytic lethal mutants based on segregation ratio distortion. Genomic DNA from two separate plants for each line was MGF, male gametophytic factor essential for pollen develop- digested with EcoRI, which ...
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ON THE COMPONENTS OF SEGREGATION DISTORTION IN DROSOPHILA MELANOGASTER. II. DELETION MAPPING AND DOSAGE ANALYSIS OF THE SD LOCUS
... chromosome, although the structurally similar SD-Mad chromosome yielded two revertants. Three remaining revertants were all induced in the SD-Roma,bw chromosome. As shown in Fig[r] ...
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On the components of segregation distortion in Drosophila melanogaster. IV. Construction and analysis of free duplications for the Responder locus.
... The competitive effect becomes still more apparent when the two R s p alleles are of about equal sensitivity; for all S D chromosomes tested the k values against cn bw ar[r] ...
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X-linked elements associated with negative segregation distortion in the SD system of Drosophila melanogaster.
... The mean difference in group 2 is not significant, indicating that regions in the supp-X(SD) chromosome, other than ( c v + ) , have rather minor effects upon male fecundit[r] ...
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