[PDF] Top 20 Mechanisms of Genetic Exchange Within the Chromosomal Inversions of Drosophila pseudoobscura

... netic exchange are sensitive to the position within an inverted region, we wished to estimate the distance between each locus and the inversion ...D. pseudoobscura was determined in an inbred strain ... See full document

... potential mechanisms that maintain fre- quencies of third chromosome gene arrangements in ...D. pseudoobscura occupies: AR/ST, AR/CH, ST/CH, AR/PP, and AR/AR ...the mechanisms maintaining their ... See full document

... of genetic exchange is higher when the region is located in a more central position of the inverted fragment than when it is close to the ...variation within chromosomal arrangements still ... See full document

... paracentric inversions fixed between D. pseudoobscura and ...regions, genetic dif- ferences are relatively homogenized between the spe- cies, likely due to, while inside these regions, divergence ... See full document

... Variation in relative 0.98 and 1.00 AP-3 allozyme activities of chromosome 3 isogenic strains was examined on acrylamide gels in F, heterozygotes obtained by crossing these str[r] ... See full document

... If position-effect variegation involves suppres- sion of transcription, then one should obtain variegated transcription of the rDNA which is located in the heterochromatic region at [r] ... See full document

... Figure 1 shows the constitution of the balancer stock, Val Ba (SPERLICH et al. 1977), as well as the crossing scheme used to obtain either isochromosomal lines for the 0 ch[r] ... See full document

... These field data are consistent with the belief that habitat choice and resource partitioning occur in these populations, but lacking has been a direct demonstration [r] ... See full document

... D. pseudoobscura from the genome sequence (16% of element ...D. pseudoobscura (Figure ...D. pseudoobscura arrangements (HY would require a further inversion to change the order of grau and stan back ... See full document

... INCE a formal characterization of the nature of inversions has not been made to date, this paper will hypothesize mathematical models for the occurrence of inversions of various[r] ... See full document

... MARGARET C. In third instar larvae from Boulder AR and PP third chromosome gene arrangements survived better than TL and others, while the reverse situation occurred for L[r] ... See full document

... the cytological maps that genes Bo.re the interr~;cic:l ~:nd Since it is now lmovm in purple definitely lie within inversion,s o:f the second and third chromosomes respec- tively, arn'l [r] ... See full document

... INCE natural selection operates directly on phenotypes, and only indirectly on genotypes, phenotypic variability is as essential to evolution as genotypic variability. Accordin[r] ... See full document

... Autosynaptic Drosophila males produce LS-bearing and DS-bearing sperm to the virtual exclusion of other genotypes; crosses of autosynaptic males to either heterosynapt[r] ... See full document

... The two independent methods utilized for the study of the genetic loads, namely that of the viability depression in inbred as compared to outbred progenies, and of the loss of[r] ... See full document

... We have used the frequency of first meiotic anaphase bridges as an indicator of presumptive inversions in the mouse (RODERICK 1971) and reported on two inversions induced by[r] ... See full document

... the Drosophila data, we applied our method separately to all 22 human ...be inversions: outlying windows coin- cide with three of the six large polymorphic inversions de- scribed in Antonacci et ... See full document

... affected by gene flux rates. The main differences be- one inversion per million years was estimated for the E tween the central region and the regions around the element (Ranz et al. 1997, 1999). Because most inver- ... See full document

... Joint analysis of chromosomal polymorphism and genetic load: The distribution of homozygous viability effects among gene arrangements was first investigated by a chi square analy[r] ... See full document

... A comparison of the right limbs of the X chromosome and of the second chromosomes leads to conclusions fully consistent with the above: in either case the miranda arra[r] ... See full document