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関連する概念動画

Trihybrid Crosses02:27

Trihybrid Crosses

Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal chance to...
Monohybrid Crosses01:20

Monohybrid Crosses

Overview
Dihybrid Crosses01:18

Dihybrid Crosses

Overview
Chi-square Analysis02:46

Chi-square Analysis

The chi-square test is a statistical hypothesis test. It is used to check whether there is a significant difference between an expected value and an observed value. In the context of genetics, it enables us to either accept or reject a hypothesis, based on how much the observed values deviate from the expected values.
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
Incomplete Dominance01:43

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
Frequency-dependent Selection01:21

Frequency-dependent Selection

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.Positive Frequency-Dependent SelectionIn positive...

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関連する実験動画

Updated: Jul 11, 2026

Development of Targeting Induced Local Lesions IN Genomes (TILLING) Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis
08:36

Development of Targeting Induced Local Lesions IN Genomes (TILLING) Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis

Published on: July 16, 2019

内部節の長さの変異は,小麦の植物型に影響する.

C O Qualset, G N Fick, M J Constantin

    Science (New York, N.Y.)
    |September 11, 1970
    PubMed
    まとめ
    この要約は機械生成です。

    研究者らは,ガンマ線治療により茎が短い小麦変異種を特定した. 単一の支配的な遺伝子によって制御されるこの遺伝子変異は,潜在的作物生産性研究のためのキャンピーの構造を変更します.

    さらに関連する動画

    An Array-based Comparative Genomic Hybridization Platform for Efficient Detection of Copy Number Variations in Fast Neutron-induced Medicago truncatula Mutants
    09:32

    An Array-based Comparative Genomic Hybridization Platform for Efficient Detection of Copy Number Variations in Fast Neutron-induced Medicago truncatula Mutants

    Published on: November 8, 2017

    Identifying Mutations by High Resolution Melting in a TILLING Population of Rice
    06:10

    Identifying Mutations by High Resolution Melting in a TILLING Population of Rice

    Published on: September 2, 2019

    関連する実験動画

    Last Updated: Jul 11, 2026

    Development of Targeting Induced Local Lesions IN Genomes (TILLING) Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis
    08:36

    Development of Targeting Induced Local Lesions IN Genomes (TILLING) Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis

    Published on: July 16, 2019

    An Array-based Comparative Genomic Hybridization Platform for Efficient Detection of Copy Number Variations in Fast Neutron-induced Medicago truncatula Mutants
    09:32

    An Array-based Comparative Genomic Hybridization Platform for Efficient Detection of Copy Number Variations in Fast Neutron-induced Medicago truncatula Mutants

    Published on: November 8, 2017

    Identifying Mutations by High Resolution Melting in a TILLING Population of Rice
    06:10

    Identifying Mutations by High Resolution Melting in a TILLING Population of Rice

    Published on: September 2, 2019

    科学分野:

    • 植物遺伝学 植物遺伝学
    • 農作物科学とは
    • ミューテーション繁殖 ミューテーション繁殖

    背景:

    • 小麦 (Triticum aestivum) は,世界的に重要な作物である.
    • 植物構造の遺伝子制御を理解することは,改良された品種を育成するための鍵です.
    • 変異誘導は,新しい遺伝子変異を生成するためのツールです.

    研究 の 目的:

    • 小麦の新型変異体の発見と特徴を報告するために.
    • 観察された矮人現象型の遺伝的基礎を調査する.
    • 農作物の生産性研究におけるこの変異体の潜在的有用性を評価する.

    主な方法:

    • 小麦の穀物のガンマ放射線 (cv. "セネカ" (Seneca) は3.2億円で販売されている.
    • M(2) 発電所の高度と内部節の長さのフェノタイプ評価.
    • 変異の遺伝的コントロールを決定するための分離分析.

    主要な成果:

    • インターノード長が大幅に短縮された (33%と15%の第1および第2のインターノード) と全体の高さが18%短縮された変異体が特定されました.
    • フラグの葉のシート長さは正常であり,スパイクがフラグの葉のラミナの下に置かれました.
    • 分離データは,単一の支配的な遺伝子による制御を示した.

    結論:

    • 新しい支配的な遺伝子が小麦の矮小フェノタイプを制御し,植物の高さや棚の構造に影響を与えます.
    • この変異体は,小麦の天棚の光検知と生理学的効率を研究するための貴重なツールを提供します.
    • 変更されたアーキテクチャは,作物の生産性を最適化することを目的とした育種プログラムに影響を及ぼす可能性があります.