Segregate Populations
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Genetic approaches for studying transgene inheritance and genetic recombination in three successive generations of transformed tobacco
Transgene integration into plant genomes is a complex process accompanied by molecular rearrangements. Classic methods that are normally used to study transgenic population genetics are generally inadequate for assessing such integration. Two major characteristics of transgenic populations are that a transgenic genome may harbor many copies of the transgene
Genetics and Molecular Biology. Publicado em: 2012
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2. Carioca bean breeding: evaluation of segregate population and use of molecular markers looking for resistance to pathogens / Melhoramento de feijão do tipo Carioca: avaliação de populações segregantes e uso de marcadores moleculares visando resistência a patógenos
In order to develop Carioca bean lines resistant to Colletotrichum lindemuthianum, Uromyces appendiculatus and Phaeoisariopsis griseola and showing desirable agronomic characteristics, it was done phenotypic and molecular characterization of 30 Carioca bean lines and also of Rudá-R which comes from a program of pyramiding of gene resistant to bean pathogen,
Publicado em: 2006
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3. Estimation of additive direct and maternal genetic and non additive effects and prediction of the performance of weights, scrotal circumference and muscling scores in a Bos taurus x Bos indicus, composite beef cattle population. / Estimação de efeitos genéticos aditivos diretos e maternos e não aditivos e, predição do desempenho de pesos, perímetro escrotal e musculosidade em uma população de bovinos de corte compostos (Bos taurus x Bos indicus)
Data of weights at birth, weaning, 390 days, weight gain from weaning to 390 days, scrotal circumference and muscling scores at 390 days of age of a population used in the formation of the Montana Tropical® beef composite, raised under tropical conditions, were analyzed under three different models to: i) determine genetic and environment effects ii) determ
Publicado em: 2005
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4. Problems in the Definition, Interpretation, and Evaluation of Genetic Heterogeneity
Suppose that we wish to classify families with multiple cases of disease into one of three categories: those that segregate mutations of a gene of interest, those which segregate mutations of other genes, and those whose disease is due to nonhereditary factors or chance. Among families in the first two categories (the hereditary families), we wish to estimat
The American Society of Human Genetics.
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5. Speciation by monobrachial centric fusions
Fixation of centric fusions in natural populations often encounters minimal meiotic problems due to the ability of trivalents to segregate normally; therefore, little sterility barrier is achieved between a founder population and the parental stock. However, a strong sterility barrier can develop between different founder populations fixed for centric fusion
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6. Genetic and Molecular Organization of Ribosomal DNA (Rdna) Variants in Wild and Cultivated Barley
Twenty rDNA spacer-length variants (slvs) have been identified in barley. These slvs form a ladder in which each variant (with one exception) differs from its immediate neighbors by a 115-bp subrepeat. The 20 slvs are organized in two families, one forming an eight-step ladder (slvs 100-107) in the nucleolus organizer region (NOR) of chromosome 7 and the oth
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7. Glutamate Oxaloacetate Transaminase (Got) Genetics in the Mouse: Polymorphism of Got-1
We have examined a polymorphism for the soluble glutamate oxaloacetate (GOT-1) isozyme system which was found in the Asian mouse Mus castaneus. Variants of GOT-1 segregate as though they are controlled by codominant alleles for a single autosomal locus which we have designated Got-1. No close linkage of genes for soluble and mitochondrial forms of the enzyme
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8. Manifold anomalies in gene expression in a vineyard isolate of Saccharomyces cerevisiae revealed by DNA microarray analysis
Genome-wide transcriptional profiling has important applications in evolutionary biology for assaying the extent of heterozygosity for alleles showing quantitative variation in gene expression in natural populations. We have used DNA microarray analysis to study the global pattern of transcription in a homothallic strain of Saccharomyces cerevisiae isol
The National Academy of Sciences.
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9. Secondary Tetrasomic Segregation of Mdh-B and Preferential Pairing of Homeologues in Rainbow Trout
We examined the inheritance of allelic variation at an isozyme locus, MDH-B, duplicated by ancestral polyploidy in salmonid fishes. We detected only disomic segregation in females. Segregation ratios in males were best explained by a mixture of disomic and tetrasomic inheritance. We propose a two-stage model of pairing in male meiosis in which, first, homolo
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10. Experimental specification of cell sorting, tissue spreading, and specific spatial patterning by quantitative differences in cadherin expression.
The sorting-out of embryonic cells from a cell mixture and the selective spreading of one cell population over the surface of another have been attributed to various causes. These include differentials in chemotaxis, in cellular adhesiveness, in cell surface contractility, in speed of cell movement, and in the timing of postulated changes in cellular adhesiv
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11. Mouse Hepatitis Virus Replicase Proteins Associate with Two Distinct Populations of Intracellular Membranes
The coronavirus replicase gene (gene 1) is translated into two co-amino-terminal polyproteins that are proteolytically processed to yield more than 15 mature proteins. Several gene 1 proteins have been shown to localize at sites of viral RNA synthesis in the infected cell cytoplasm, notably on late endosomes at early times of infection. However, both immunof
American Society for Microbiology.
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12. Parental sex discrimination and intralocus sexual conflict
Intralocus sexual conflict occurs when populations segregate for alleles with opposing fitness consequences in the two sexes. This form of selection is known to be capable of maintaining genetic and fitness variation in nature, the extent of which is sensitive to the underlying genetics. We present a one-locus model of a haploid maternal effect that has sexu
The Royal Society.