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相关概念视频

Genetic Variation01:25

Genetic Variation

332
Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles,...
332
Frequency-dependent Selection01:21

Frequency-dependent Selection

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When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
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Genetic Screens02:46

Genetic Screens

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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...
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Monohybrid Crosses01:20

Monohybrid Crosses

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Overview
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Types of Selection01:46

Types of Selection

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Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
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Pharmacokinetic Models: Comparison and Selection Criterion01:26

Pharmacokinetic Models: Comparison and Selection Criterion

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Physiological and compartmental models are valuable tools used in studying biological systems. These models rely on differential equations to maintain mass balance within the system, ensuring an accurate representation of the dynamic processes at play.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
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相关实验视频

Updated: Jul 26, 2025

A Rapid and Efficient Method for Assessing Pathogenicity of Ustilago maydis on Maize and Teosinte Lines
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A Rapid and Efficient Method for Assessing Pathogenicity of Ustilago maydis on Maize and Teosinte Lines

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多样化玉米基因组选择模型

Brian R Rice1, Alexander E Lipka1

  • 1Department of Crop Sciences, University of Illinois, Urbana, IL USA.

Molecular breeding : new strategies in plant improvement
|June 13, 2023
PubMed
概括
此摘要是机器生成的。

基因组选择 (GS) 通过使用全基因组标记来预测遗传值来加速玉米的繁殖. 这篇评论探讨了GS的历史,应用和先进的模型,以实现玉米更快,更高效的遗传收益.

关键词:
GBLUPUP GBLUP 的意思是什么意思基因组选择 基因组选择混合预测可以预测.玉米 玉米 玉米 是 一种多个内核多个内核俄米克斯 (Omics) 是一个电子游戏.

更多相关视频

Discrimintion and Mapping of the Primary and Processed Transcripts in Maize Mitochondrion Using a Circular RT-PCR-based Strategy
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Discrimintion and Mapping of the Primary and Processed Transcripts in Maize Mitochondrion Using a Circular RT-PCR-based Strategy

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Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes
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Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

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相关实验视频

Last Updated: Jul 26, 2025

A Rapid and Efficient Method for Assessing Pathogenicity of Ustilago maydis on Maize and Teosinte Lines
07:09

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Discrimintion and Mapping of the Primary and Processed Transcripts in Maize Mitochondrion Using a Circular RT-PCR-based Strategy
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Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes
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Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

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科学领域:

  • 植物育种 植物育种
  • 遗传学 是一个遗传学.
  • 农业科学 农业科学

背景情况:

  • 基因组选择 (GS) 是现代玉米育种中的一个强大的工具.
  • 它利用全基因组的标记数据来估计繁殖值,增强遗传收益并减少繁殖周期.

研究的目的:

  • 审查玉米育种中基因组选择的历史和里程碑.
  • 讨论GS在开发优质玉米杂交品种和杂交品种中的应用.
  • 探索模型的改进,以提高预测准确度.

主要方法:

  • 历史数据和适应里程碑的回顾 在玉米中的GS.
  • 讨论GS在育种计划中的当前和潜在应用.
  • 综合遗传效应和相互作用的先进GS模型的表征.

主要成果:

  • 转基因显著增加了玉米的遗传收益,并缩短了玉米的繁殖周期.
  • 精制的GS模型可以解释非添加性遗传效应和基因型与环境相互作用.
  • 整合多学科数据可以进一步提高预测准确性.

结论:

  • 基因组选择对于高效的玉米改良至关重要.
  • 先进的GS模型和数据集成是最大化遗传收益的关键.
  • 建议在整个育种阶段对GS进行战略性应用,以获得最佳结果.