相关实验视频

Updated: Sep 18, 2025

A Technique to Screen American Beech for Resistance to the Beech Scale Insect Cryptococcus fagisuga Lind.
12:47

A Technique to Screen American Beech for Resistance to the Beech Scale Insect Cryptococcus fagisuga Lind.

Published on: May 27, 2014

9.8K

沿着一个海拔梯度的欧洲种群的遗传多样性和细度空间遗传结构

Ourania Grigoriadou Zormpa1,2, Selina Wilhelmi1,2, Boban Vucetic1

  • 1Faculty of Forest Sciences and Forest Ecology, Forest Genetics and Forest Tree Breeding, University of Göttingen, Göttingen, Germany.

Heredity
|June 26, 2025
PubMed
概括

欧洲种群中的遗传多样性和细度空间遗传结构 (FSGS) 随着海拔的上升而下降. 高海拔地区较低的遗传多样性可能是漂移和边缘条件的结果,而开放的森林结构可能会增强花粉分散,削弱FSGS.

更多相关视频

Leaf Area Index Estimation Using Three Distinct Methods in Pure Deciduous Stands09:04

Leaf Area Index Estimation Using Three Distinct Methods in Pure Deciduous Stands

Published on: August 29, 2019

13.7K
A Method for Quantifying Foliage-Dwelling Arthropods08:20

A Method for Quantifying Foliage-Dwelling Arthropods

Published on: October 20, 2019

5.9K

相关概念视频

Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

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).
59.5K
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

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...
6.2K
Gene Flow02:39

Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.6K
Genetic Drift03:33

Genetic Drift

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.
40.8K
Genetic Variation01:25

Genetic Variation

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,...
397
What is Population Genetics?01:25

What is Population Genetics?

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.
59.8K