Genealogical Tree
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Infertilidade na relação conjugal: uma pesquisa na abordagem junguiana utilizando a terapia breve com Sandplay / Infertility within the conjugal relationship, a jungian approach using Sandplay therapy
Esta pesquisa procurou obter um melhor entendimento da complexa questão da infertilidade dentro da relação conjugal. Nosso estudo baseou-se na premissa de que a infertilidade não é uma questão apenas individual, mas também conjugal, e precisa ser assim considerada. Embora, em geral, apenas um dos cônjuges receba o diagnóstico de infertilidade, essa
Publicado em: 2008
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2. Conformational mutation in human mtDNA detected by direct sequencing of enzymatically amplified DNA.
Restriction enzyme analysis of 241 human mtDNAs revealed polymorphism in the electrophoretic mobility of a fragment corresponding to part of the ND4 gene. Enzymatic amplification and direct sequencing of this fragment demonstrates that a single T--C transition correlates with the faster mobility exhibited by the fragment in seven mtDNAs from Papua New Guinea
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3. Gene Genealogy in Three Related Populations: Consistency Probability between Gene and Population Trees
A genealogical relationship among genes at a locus (gene tree) sampled from three related populations was examined with special reference to population relatedness (population tree). A phylogenetically informative event in a gene tree constructed from nucleotide differences consists of interspecific coalescences of genes in each of which two genes sampled fr
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4. Evolutionary tree for apes and humans based on cleavage maps of mitochondrial DNA.
The high rate of evolution of mitochondrial DNA makes this molecule suitable for genealogical research on such closely related species as humans and apes. Because previous approaches failed to establish the branching order of the lineages leading to humans, gorillas, and chimpanzees, we compared human mitochondrial DNA to mitochondrial DNA from five species
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5. Gene genealogies and population variation in plants
Early in the development of plant evolutionary biology, genetic drift, fluctuations in population size, and isolation were identified as critical processes that affect the course of evolution in plant species. Attempts to assess these processes in natural populations became possible only with the development of neutral genetic markers in the 1960s. More
The National Academy of Sciences.
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6. Stepwise intraclonal maturation of antibody affinity through somatic hypermutation.
Using recombinant DNA techniques, we reconstructed a genealogical tree (Sablitzky, F., Wildner, G. & Rajewsky, K. (1985) EMBO J. 4, 345-350) that connects three clonally related B cells producing somatically mutated antibodies to a progenitor cell expressing a germ line-encoded antibody. The somatic mutants had been isolated from an in vivo immune response.
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7. A Nomenclature System for the Tree of Human Y-Chromosomal Binary Haplogroups
The Y chromosome contains the largest nonrecombining block in the human genome. By virtue of its many polymorphisms, it is now the most informative haplotyping system, with applications in evolutionary studies, forensics, medical genetics, and genealogical reconstruction. However, the emergence of several unrelated and nonsystematic nomenclatures for Y-chrom
Cold Spring Harbor Laboratory Press.
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8. Monophyletic origin and unique dispersal patterns of domestic fowls.
With the aim of elucidating in greater detail the genealogical origin of the present domestic fowls of the world, we have determined mtDNA sequences of the D-loop regions for a total of 21 birds, of which 12 samples belong to red junglefowl (Gallus gallus) comprising three subspecies (six Gallus gallus gallus, three Gallus gallus spadiceus, and three Gallus
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9. The universal ancestor
A genetic annealing model for the universal ancestor of all extant life is presented; the name of the model derives from its resemblance to physical annealing. The scenario pictured starts when “genetic temperatures” were very high, cellular entities (progenotes) were very simple, and information processing systems were inaccurate. Initially, both mutati
The National Academy of Sciences.
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10. Mitochondrial DNA sequences in single hairs from a southern African population.
Hypervariable parts of mitochondrial DNA (mtDNA) were amplified enzymatically and sequenced directly by using genomic DNA from single plucked human hairs. This method has been applied to study mtDNA sequence variation among 15 members of the !Kung population. A genealogical tree relating these aboriginal, Khoisan-speaking southern Africans to 68 other humans
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11. Gene Genealogies within Mutant Allelic Classes
A coalescent theory of the gene genealogy within an allelic class that arises by a unique mutational event is developed and analyzed. To interpret this theory it was necessary to expand on existing theory for populations of varying size. Two features of the gene genealogy--the average pairwise distance and the total tree length--within the mutant class and w
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12. A highly polymorphic microsatellite in the class II Eb gene allows tracing of major histocompatibility complex evolution in mouse.
A hallmark of major histocompatibility complex (MHC) genes is their extraordinarily high level of polymorphism. Polymorphic residues on MHC molecules determine which peptide ligands they bind and present to effector T lymphocytes. Although the genetic mechanisms responsible for MHC polymorphism have been delineated, the timetable and the pathway of their div