Seventeenth Semiannual Report of the Commission to the Congress, January 1955

Strauss, Lewis L.

doi:10.2172/1363889

Cited by 2 publications

(3 citation statements)

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“…A partir del siglo XVI se atestigua el uso de pieles y/o restos óseos de jaguar por parte de las comunidades indígenas en el actual territorio uruguayo (Tabla 5) y en la región (ver por ej. Lopes de Souza [1531] en Varnhagen, 1839;Dobrizhoffer, 1969Dobrizhoffer, [1717Dobrizhoffer, -1791; Ambrosetti, 1896;Levi-Strauss, 1992[1955).…”

Section: Discussionunclassified

Repaso integrador de la presencia del jaguar (Panthera onca) en Uruguay con nuevos datos arqueozoológicos

Ferrari Luaces,

González,

Manzuetti Berón

2023

Rev. Mus. Antrop.

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En Uruguay el jaguar, Panthera onca, se considera extinto desde 1901. Existen registros paleontológicos, arqueológicos y documentación histórica que dan cuenta de la presencia de la especie en distintas partes del territorio nacional. Asimismo, hay en el país numerosos accidentes geográficos que incluyen en su nombre la palabra “tigre”, que es como se denominaba localmente a este félido en la época colonial, lo que denota su importancia a nivel cultural. Para determinar la distribución pasada del jaguar en Uruguay se revisó la bibliografía histórica y actual. Se relevó material existente en colecciones zoológicas, paleontológicas y arqueológicas nacionales y se analizó la toponimia nacional en busca de referencias sobre la especie. Se encontraron 14 registros paleontológicos, 3 arqueológicos, 45 menciones históricas y 51 topónimos. Adicionalmente, se describen materiales inéditos o escasamente estudiados asociados a sitios arqueológicos y se discuten sus implicancias a nivel antropológico. Se revisan las referencias literarias relativas a su abundancia en el pasado y su potencial vinculación con el desarrollo ganadero temprano en esta región del continente.

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Section: Discussionunclassified

Repaso integrador de la presencia del jaguar (Panthera onca) en Uruguay con nuevos datos arqueozoológicos

Ferrari Luaces,

González,

Manzuetti Berón

2023

Rev. Mus. Antrop.

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“…Such a view would require the following assumptions: 1) a linear sequence of reactions; 2) that this sequence is localized to the immediate vicinity of the chromosome; 3) that each locus in the segment is a discrete functional unit; 4) that each step in the sequence is controlled by one locus. Aside from the fact that evidence is available that suggests interchromosomal interaction in certain cases (CHOVNICK and Fox 1953;LEWIS 1954b and1955) and non-linearity in others (BARISH and FOX 1956), the complexity of this view is not conducive to its acceptance.…”

Section: Discussionmentioning

confidence: 99%

“…The simplest conclusion to be drawn is that the lozenge loci do not function as independent physiological units, clearly ruling out the hypothesis represented in figure 1C. Kinetic considerations (WRIGHT 1941;STRAUSS 1955), relating to substrate utilization, might be developed to reconcile the hypotheses portrayed in A and B with the data, but only at the expense of considerable complexity. It would seem simpler to conclude that the entire segment operates as an integrated unit in tarsal development (fig.…”

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confidence: 99%

A Phenogenetic Study of the Lozenge Pseudoalleles in Drosophila Melanogaster. Ii. Effects on the Development of Tarsal Claws in Heterozygotes

Chovnick

Lefkowitz

1956

Genetics

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ONSIDERABLE attention has been drawn to the various cases of apparent C multiple alleles which upon critical examination have been found to exh bit a low order of recombination, as if they occupy spatially separable, adjacent gene loci. Such mutants, termed pseudoalleles, exhibit what have been considered to be the physiological criteria of allelism ; namely 1) they exhibit similar phenotypic effects, and 2) their heterozygotes exhibit dominance of one or the other member or intermediate phenotypes. In addition, position effects are noted in several cases, as follows: if one considers a pair of pseudoallelic loci, a+ and b+, and their respective mutant alleles, a and b, the coupling or cis heterozygote, a+b+/ab, appears wild type, while the repulsion or trans heterozygote, u+b/ab+, exhibits the mutant phenotype. Considerable speculation, disagreement, and confusion exists concerning the interpretations to be given to these observations. The confusion may be avoided if it is recognized that the disagreement is concerned with two quite distinct problems: 1) The observations associated with pseudoallelism have led to interpretations regarding the structural organization of the hereditary material.Three views have been offered: (a) The chromosome is the fundamental unit of heredity. This interpretation proposes that the chromosome is a physical continuum whose intact organization is necessary to exhibit the normal phenotype. Mutations are believed to be due to rearrangements within this organization. Such rearrangements exhibit the separable behavior of genes when subjected to a breeding experiment (GOLDSCHMIDT 1938(GOLDSCHMIDT , 1951. (b) The chromosome consists of a linear arrangement of separable segments. Each segment consists of a grouping of subsegments exhibiting a low order of recombination (PONTECORVO 1953). (c) The genetic material consists of discrete units which are separable on the basis of recombination. This view suggests that pseudoalleles are duplicates which may have arisen by unequal crossing over (LEWIS 1951; GREEN 1955).2) The second area of disagreement concerns the nature of the physiological mechanisms underlying the phenotypic and position effects associated with pseudoallelic loci. (a) One hypothesis proposes that the entire segment acts as a physiological unit. Such regions may exist in alternative forms, subject to both internal

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Seventeenth Semiannual Report of the Commission to the Congress, January 1955

Cited by 2 publications

References 0 publications

Repaso integrador de la presencia del jaguar (Panthera onca) en Uruguay con nuevos datos arqueozoológicos

Repaso integrador de la presencia del jaguar (Panthera onca) en Uruguay con nuevos datos arqueozoológicos

A Phenogenetic Study of the Lozenge Pseudoalleles in Drosophila Melanogaster. Ii. Effects on the Development of Tarsal Claws in Heterozygotes

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