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Videos de Conceptos Relacionados

Types of Genetic Transfer Between Organisms02:18

Types of Genetic Transfer Between Organisms

Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
Genetic Screens02:46

Genetic Screens

Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
Types of Genetic Transfer Between Organisms02:18

Types of Genetic Transfer Between Organisms

Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
Incentive Theory: Pull Theory of Motivation01:18

Incentive Theory: Pull Theory of Motivation

Incentive theory, or the "pull theory" of motivation, suggests that external rewards primarily drive behavior. Individuals are motivated to engage in activities when they anticipate a desirable outcome. This is why people often work hard for promotions or study intensively to achieve high grades. These incentives can be tangible, physical rewards such as money or promotions, or intangible, non-physical rewards like praise and social recognition.
The theory differentiates between intrinsic and...
Transduction01:16

Transduction

Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome are...
Motivational Bias01:25

Motivational Bias

Cognitive bias results from limitations in thinking and information processing, leading to systematic errors in judgment. Conversely, motivational bias stems from personal desires or emotions, causing distortions in perception to align with self-interest. Motivational bias influences how individuals perceive and attribute causes to events, often shaped by personal needs, goals, and self-esteem preservation. This bias can distort judgment, leading to inaccurate assessments of success, failure,...

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Video Experimental Relacionado

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Environmentally Induced Heritable Changes in Flax
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Published on: January 26, 2011

La genética. genética. La motivación de los puntos calientes.

Molly Przeworski1

  • 1Department of Human Genetics, University of Chicago, 920 East 57th Street, 507F CLSC, Chicago, IL 60637, USA. mfp@uchicago.edu

Science (New York, N.Y.)
|October 15, 2005
PubMed
Resumen
Este resumen es generado por máquina.

Los científicos han mapeado los puntos de acceso de recombinación del genoma humano utilizando datos de desequilibrio de enlace. Esta investigación identificó más de 25.000 puntos de acceso y posibles motivos de ADN que influyen en la intensidad de la recombinación.

Área de la Ciencia:

  • Genética La genética.
  • La genómica es la genómica.
  • Biología Molecular Biología Molecular

Sus antecedentes:

  • La caracterización de las tasas de recombinación a escala fina en los mamíferos es un esfuerzo científico reciente.

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  • Comprender la recombinación es crucial para los estudios genéticos y la biología evolutiva.