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相关概念视频

Morphogenesis02:19

Morphogenesis

26.8K
Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
26.8K
Introduction to Seed Plants03:40

Introduction to Seed Plants

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Most plants are seed plants—characterized by seeds, pollen, and reduced gametophytes. Seed plants include gymnosperms and angiosperms.
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Dihybrid Crosses01:18

Dihybrid Crosses

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Overview
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Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Trihybrid Crosses02:27

Trihybrid Crosses

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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...
23.1K
Monohybrid Crosses01:20

Monohybrid Crosses

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Overview
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相关实验视频

Updated: Jun 7, 2025

Author Spotlight: Improved Methods for Preparing Transverse Sections and Unrolled Whole Mounts of Maize Leaf Primordia for Fluorescence and Confocal Imaging
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Author Spotlight: Improved Methods for Preparing Transverse Sections and Unrolled Whole Mounts of Maize Leaf Primordia for Fluorescence and Confocal Imaging

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草:由于发育约束而产生的形态多样性.

Annis Richardson1, Heather Jones1, Madelaine Bartlett2

  • 1Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Daniel Rutherford Building, Max Born Crescent, Kings Buildings, Edinburgh, EH9 3BF, UK.

Current opinion in plant biology
|November 16, 2024
PubMed
概括

草地 草地 草地

科学领域:

  • 植物生物学 植物生物学
  • 进化发育生物学 进化发育生物学
  • 农业科学 农业科学

背景情况:

  • 草地在生态和农业上占主导地位.
  • 标志性虫有助于草种子的散播和苗木的建立.
  • 草表现出各种形式,并在整个草历史中多次演变.

研究的目的:

  • 为了研究保存的发育基因是草出现的进化背后的假设.
  • 探讨羽毛发育和叶片发育之间的关系.
  • 了解发展性保护是如何推动进化多样性的.

主要方法:

  • 草花发展的比较分析.
  • 假设天窗和叶片之间的同质性.
  • 检查潜伏发育计划在乐玛进化中的作用.

主要成果:

  • 草很可能与叶片相同,这表明它具有保存的发育途径.
  • 叶片的潜伏发育程序可能会在叶片的发展过程中在叶片中反复被重新激活.
  • 窗户的非基本性质允许频繁修改和丢失,推动多样性.

结论:

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A PCR-based Genotyping Method to Distinguish Between Wild-type and Ornamental Varieties of Imperata cylindrica
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  • 对发育基因的深度保护可以促进草中多种形态的演化.
  • 的复制进化表明了发展性可塑性如何促进生物多样性.
  • 草为研究叶子发育机制提供了一个模型系统.