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相关概念视频

Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

5.8K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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Pedigree Analysis01:35

Pedigree Analysis

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Overview
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Genetic Drift03:33

Genetic Drift

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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.
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What is Population Genetics?01:25

What is Population Genetics?

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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.
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Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

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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).
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Behavioral Genetics and Its Designs01:23

Behavioral Genetics and Its Designs

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Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
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相关实验视频

Updated: Jul 12, 2025

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

Published on: December 7, 2021

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一个基于概率的框架,用于从家谱树上推断人口统计数据.

Caoqi Fan1,2, Jordan L Cahoon1,3, Bryan L Dinh1,2

  • 1Department of Quantitative and Computational Biology, University of Southern California.

bioRxiv : the preprint server for biology
|October 24, 2023
PubMed
概括
此摘要是机器生成的。

我们开发了一种新的方法,系谱概率 (gLike),从遗传数据中推断出人口历史. 通过使用更多的家谱信息,gLike精确估计了人口参数,并优于现有的方法.

科学领域:

  • 人口遗传学 人口遗传学
  • 计算生物学 计算生物学
  • 基因组历史 基因组历史

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A Practical Guide to Phylogenetics for Nonexperts
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相关实验视频

Last Updated: Jul 12, 2025

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

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A Practical Guide to Phylogenetics for Nonexperts
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A Practical Guide to Phylogenetics for Nonexperts

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Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
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背景情况:

  • 人口历史塑造了基因变异,被编码在基因-家谱树上.
  • 目前的方法通常使用有限的遗传数据总结,如等位基因频率谱.

结论:

  • 对于复杂的人口人口结构的敏感和准确的推断,gLike的带未充分利用了家谱信息.
  • 适用于人类和其他物种,特别是改善全基因组基因谱估计.
  • 为拉丁美洲人和夏威夷原住民等混合人口提供了对历史人口学的见解.