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相关概念视频

Chromosome Replication02:31

Chromosome Replication

10.8K
Before a cell can divide, it must accurately replicate all of its chromosomes, including the DNA and its associated histone and non-histone proteins.  This process begins at numerous origins of replication during the S phase of the cell cycle in each of a cell’s chromosomes simultaneously. Certain nucleotides can act as origins of replication, but these sequences are not well defined - especially in complex, multi-cellular, eukaryotic species. The length of DNA that spans an origin...
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DNA Replication02:40

DNA Replication

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DNA replication involves the separation of the two strands of the double helix, with each strand serving as a template from which the new complementary strand is copied.  After replication, each double-stranded DNA includes one parental or “old” strand and one “new” strand. This is known as semiconservative replication. The resulting DNA molecules have the same sequence and are divided equally into the two daughter cells.
Replication in Prokaryotes
DNA replication...
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Replication in Prokaryotes02:35

Replication in Prokaryotes

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Overview
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Replication in Eukaryotes02:31

Replication in Eukaryotes

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Overview
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The DNA Replication Fork01:02

The DNA Replication Fork

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An organism’s genome needs to be duplicated in an efficient and error-free manner for its growth and survival. The replication fork is a Y-shaped active region where two strands of DNA are separated and replicated continuously. The coupling of DNA unzipping and complementary strand synthesis is a characteristic feature of a replication fork.   Organisms with small circular DNA, such as E. coli, often have a single origin of replication; therefore, they have only two replication...
41.2K
Restarting Stalled Replication Forks02:37

Restarting Stalled Replication Forks

6.4K
DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart,...
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相关实验视频

Updated: Feb 11, 2026

Examining Bilingual Language Control Using the Stroop Task
05:31

Examining Bilingual Language Control Using the Stroop Task

Published on: February 26, 2020

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注册报告:一个复制检查职业经验和水平任务表现的复制报告.

Elizabeth R Tenney1, Kylie Rochford1, Amelia Stillwell1

  • 1Management Department, David Eccles School of Business, University of Utah.

Psychological science
|February 9, 2026
PubMed
概括
此摘要是机器生成的。

这项研究研究了职业经验对水平面任务性能的影响. 与之前的发现相反,我们发现经验对解决这个空间推理问题的解决没有显著的影响.

关键词:
认知心理学 认知心理学专业知识 专业知识直观的物理学直观的物理学.职业经验职业经验的工作经验感知 感知 感知 感知注册报告 登记报告复制复制复制复制复制复制复制水平任务任务 水平任务

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Performing Behavioral Tasks in Subjects with Intracranial Electrodes
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Performing Behavioral Tasks in Subjects with Intracranial Electrodes

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相关实验视频

Last Updated: Feb 11, 2026

Examining Bilingual Language Control Using the Stroop Task
05:31

Examining Bilingual Language Control Using the Stroop Task

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Performing Behavioral Tasks in Subjects with Intracranial Electrodes
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Performing Behavioral Tasks in Subjects with Intracranial Electrodes

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Morris Water Maze Experiment
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Morris Water Maze Experiment

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科学领域:

  • 认知心理学 认知心理学
  • 空间推理 空间推理
  • 复制科学是复制的科学.

背景情况:

  • 关于职业经验和水平任务执行情况存在相互矛盾的发现.
  • 之前的研究 (Hecht & Proffitt,1995; Vasta等,1997) 的样本规模较小,导致不确定性.
  • 直接复制对于验证科学发现至关重要.

研究的目的:

  • 直接复制Hecht和Proffitt (1995) 在职业经验和水平任务执行方面的主要发现.
  • 解决之前研究中相互矛盾的结果和小样本大小造成的不确定性.
  • 调查处理液体的经验与水平面任务的表现之间的关系.

主要方法:

  • 在德国,一项高功率的直接复制研究与407名成年参与者进行.
  • 该方法旨在密切遵循Hecht和Proffitt (1995) 的方法.
  • 进行了统计分析,以比较具有和没有相关职业经验的组之间的表现.

主要成果:

  • 赫赫特和普罗菲特 (1995) 的首要发现没有被复制.
  • 两组之间观察到一个小而无意义的差异.
  • 该研究在检测观察到的非显著差异时的功率不到33%.

结论:

  • 与Hecht和Proffitt (1995) 相反,处理液体的职业经验似乎不会对水平面任务的执行产生负面影响.
  • 目前的高功率复制表明,最初的发现可能不稳固.
  • 可能需要进一步的研究,以充分了解影响水平面任务执行的因素.