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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
31/03/2023 |
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Autoria: |
ROBERTSON, A. |
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Afiliação: |
ALAN ROBERTSON. |
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Título: |
The effect of selection against extreme deviants based on deviation or on homozygosis. |
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Ano de publicação: |
1956 |
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Fonte/Imprenta: |
Journal Genetical, v. 54, n. 236, p. 236-248, May, 1956. |
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DOI: |
https://doi.org/10.1007/BF02982779 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The genetic consequences of selection of intermediates or extremes for metric characters has been analysed- Selection of intermediates leads to fixation and selection of extremes (disassortative mating) will lead to a stable genetic situation with intermediate gene frequencies. The selection of intermediates is similar to the higher natural fitness of metric . intermediates often found in nature. The alternative model for the latter situation, in which the extremes hare a low fitness because they are homozygotes, was also analysed. It was found that several different phenomena could be interrelated on this model?the relationship of fitness to deviation both in the equilibrium population and after artificial selection, the decline in fitness after such selection and the rate of return to the equilibrium position when selection was suspended. The constant integrating these, called the homo-eostatic strength of the character, is related to the mean fitness of homozygotes compared to that of heterozygotes at the individual loci concerned. |
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Palavras-Chave: |
Equilibrium Population; Gese; Heterozygotes; Restricting Parent. |
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Thesagro: |
Animal; Melhoramento. |
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Thesaurus Nal: |
Animal genetics; Artificial selection; Gene frequency. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 01782naa a2200241 a 4500
001 1522926
005 2023-03-31
008 1956 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/BF02982779$2DOI
100 1 $aROBERTSON, A.
245 $aThe effect of selection against extreme deviants based on deviation or on homozygosis.$h[electronic resource]
260 $c1956
520 $aAbstract: The genetic consequences of selection of intermediates or extremes for metric characters has been analysed- Selection of intermediates leads to fixation and selection of extremes (disassortative mating) will lead to a stable genetic situation with intermediate gene frequencies. The selection of intermediates is similar to the higher natural fitness of metric . intermediates often found in nature. The alternative model for the latter situation, in which the extremes hare a low fitness because they are homozygotes, was also analysed. It was found that several different phenomena could be interrelated on this model?the relationship of fitness to deviation both in the equilibrium population and after artificial selection, the decline in fitness after such selection and the rate of return to the equilibrium position when selection was suspended. The constant integrating these, called the homo-eostatic strength of the character, is related to the mean fitness of homozygotes compared to that of heterozygotes at the individual loci concerned.
650 $aAnimal genetics
650 $aArtificial selection
650 $aGene frequency
650 $aAnimal
650 $aMelhoramento
653 $aEquilibrium Population
653 $aGese
653 $aHeterozygotes
653 $aRestricting Parent
773 $tJournal Genetical$gv. 54, n. 236, p. 236-248, May, 1956.
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Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 3 | |
| 1. |  | SILVA, A. C.; TORRADO, P. V.; MARTIN-NETO, L.; VASQUEZ, F. M.; GONZALEZ-PEREZ, M. Soil organic matter and geomorphic surface stability relationship in an Oxisol Toposequence (SE Brazil). In: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 623-626. CLASSIFICAÇÃO CDD: 630| Biblioteca(s): Embrapa Instrumentação. |
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| 2. | | SILVA, A. C.; TORRADO, P. V.; MARTIN-NETO, L. VASQUEZ, F. M.; PÉREZ, M. G. Soil organic matter and geomorphic surface stability relationship in an oxisol toposequence (SE BRAZIL). In: INTERNATIONAL MEETING OF INTERNATIONAL HUMIC SUBSTANCES SOCIETY. -- IHSS, 12, São Pedro, SP, 2004. Humic substances and soil and water environment. Abstracts...[São Carlos], SP: Embrapa Instrumentação Agropecuária, 2004. p. 80.| Biblioteca(s): Embrapa Instrumentação. |
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| Registros recuperados : 3 | |
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