Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

What is Population Genetics?01:25

What is Population Genetics?

58.3K
A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.
58.3K
Hardy-Weinberg Principle01:49

Hardy-Weinberg Principle

72.3K
Diploid organisms have two alleles of each gene, one from each parent, in their somatic cells. Therefore, each individual contributes two alleles to the gene pool of the population. The gene pool of a population is the sum of every allele of all genes within that population and has some degree of variation. Genetic variation is typically expressed as a relative frequency, which is the percentage of the total population that has a given allele, genotype or phenotype.
72.3K
Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

58.6K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
58.6K
Genetic Variation01:25

Genetic Variation

328
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,...
328
Genetic Drift03:33

Genetic Drift

39.9K
Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.
39.9K
Gene Flow02:39

Gene Flow

35.3K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.3K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Life as a Categorical Information-Handling System: An Evolutionary Information-Theoretic Model of the Holobiont.

Biology·2026
Same author

On Non-Random Mating, Adaptive Evolution, and Information Theory.

Biology·2025
Same author

iHDSel software: The price equation and the population stability index to detect genomic patterns compatible with selective sweeps. An example with SARS-CoV-2.

Biology methods & protocols·2024
Same author

Detecting Local Adaptation between North and South European Atlantic Salmon Populations.

Biology·2022
Same author

HacDivSel: Two new methods (haplotype-based and outlier-based) for the detection of divergent selection in pairs of populations.

PloS one·2017

相关实验视频

Updated: Jul 23, 2025

A Practical Guide to Phylogenetics for Nonexperts
12:00

A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

35.4K

1LocusSim是一个移动友好的模拟器,用于教学人口遗传学.

Antonio Carvajal-Rodríguez1

  • 1Department of Biochemistry, Genetics and Immunology, Facultad de Biologia, Centro de Investigación Mariña (CIM), University of Vigo, Vigo 36310, Spain.

Bioinformatics advances
|July 17, 2023
PubMed
概括
此摘要是机器生成的。

1LocusSim是一个基于网络的模拟器,旨在帮助生物学学生理解进化遗传学概念,如遗传漂移和选择. 它允许学生探索人口规模和突变等因素如何影响等位基频率.

更多相关视频

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
20:36

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Published on: July 4, 2007

8.8K
Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
08:03

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

Published on: December 7, 2021

2.2K

相关实验视频

Last Updated: Jul 23, 2025

A Practical Guide to Phylogenetics for Nonexperts
12:00

A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

35.4K
Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
20:36

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Published on: July 4, 2007

8.8K
Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
08:03

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

Published on: December 7, 2021

2.2K

科学领域:

  • 进化遗传学的进化遗传学
  • 人口遗传学 人口遗传学
  • 生物信息学是一种生物信息学.

背景情况:

  • 生物学学生经常发现基本的进化遗传学概念具有挑战性.
  • 了解遗传漂移,突变和选择对于理解进化过程至关重要.

研究的目的:

  • 开发一个可访问的工具,1LocusSim,用于模拟进化遗传学原理.
  • 帮助学生可视化和分析各种因素对等位基频率的影响.

主要方法:

  • 1LocusSim模拟了种群大小,突变,选择和统治的相互作用.
  • 基于Web的工具允许将理论结果与模拟结果进行比较.
  • 它以响应式布局为智能手机可访问性而设计.

主要成果:

  • 模拟器被用来证明人口遗传学中的过度主导模型.
  • 它强调平衡取决于选择系数的比率,可通过支配系数 (h) 表示.
  • 用模拟器计算了状细胞贫血的平衡值.

结论:

  • 1LocusSim为学生提供了一个交互式平台,让他们以自己的速度学习人口遗传学.
  • 该工具通过模拟促进了对进化机制的更深入理解.
  • 它提供了一种实用的方法来研究复杂的遗传模型和现实世界的例子.