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相关概念视频

Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...

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通过NPY/NPF类受体进行调制是经验依赖性,性二态性学习的基础.

Sonu Peedikayil-Kurien1,2, Rizwanul Haque1,2, Asaf Gat1,2

  • 1Department of Brain Sciences, Weizmann Institute of Science, Rehovot, 7610001, Israel.

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雄性和雌性虫的学习方式不同. 一个神经受体,NPR-5,通过调节神经元活动来响应共享经验来控制男性的学习和决策.

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科学领域:

  • 神经科学是一个神经科学.
  • 行为生物学 行为生物学
  • 遗传学 遗传学 是一个

背景情况:

  • 性选择可以驱动不同的进化路径和两性之间的行为差异.
  • 从共同经验中理解性别特异性的学习机制仍然是生物学中的一个关键问题.

研究的目的:

  • 为了研究C. elegans的学习和回避行为中的性二态.
  • 识别性别特异性学习背后的分子和神经机制.

主要方法:

  • 行为测定测量避免致病细菌 (PA14).
  • 神经活动成像用于评估二态表示.
  • 转录组分析以确定关键基因.
  • 对npr-5基因进行基因操纵.

主要成果:

  • 与雌雄相比,C. elegans雄性对避免PA14的学习效率较低,学习速度较慢.
  • 在暴露于病原体期间的神经元活动模式是性二态的.
  • 神经受体NPR-5通过调节神经元活动来调节男性的学习.
  • 男性的决策取决于性状,NPR-5充当感官暗示调节器.

结论:

  • 像NPR-5这样的神经调节剂在对环境刺激的反应中驱动性别特异的行为可塑性.
  • 性地位显著影响男性的决策过程.
  • 这些发现提供了关于性别特异性适应性行为的神经基础的见解.