相关实验视频

Updated: Jan 14, 2026

Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria
07:25

Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria

Published on: July 20, 2017

12.0K

商业捕捞鱼类的性别差异化:在动态海洋环境中重新思考种群结构

Courtney E C Gardiner1, Sophie von der Heyden1,2, Conrad A Matthee1

  • 1Evolutionary Genomics Group, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa.

Global change biology
|October 24, 2025
PubMed
概括

剥削鱼的基因组变异Merluccius paradoxus是由性别驱动的,而不是地理. 这种以性别相关的分歧集中在特定的染色体上,影响着种群结构和适应潜力,这对渔业管理至关重要.

关键词:
梅鲁西乌斯悖论 (MERLUCCIUS PARADOXUS) 是一个令人惊的现象.渔业管理 渔业管理地方适应 地方适应海洋基因组学 海洋基因组学人口基因组学 人口基因组学东南大西洋的东南部整个基因组测序的测序.

更多相关视频

Dissection of Larval Zebrafish Gonadal Tissue10:43

Dissection of Larval Zebrafish Gonadal Tissue

Published on: April 26, 2017

11.0K
Boldness, Aggression, and Shoaling Assays for Zebrafish Behavioral Syndromes08:43

Boldness, Aggression, and Shoaling Assays for Zebrafish Behavioral Syndromes

Published on: August 29, 2016

10.9K

相关概念视频

Speciation Rates01:07

Speciation Rates

Overview
22.6K
Genetics of Speciation02:16

Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
20.8K
The Ratio of X Chromosome to Autosomes02:45

The Ratio of X Chromosome to Autosomes

In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.  
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
9.4K
Types of Selection01:46

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
43.9K
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...
7.4K
Testing a Claim about Population Proportion01:24

Testing a Claim about Population Proportion

A complete procedure for testing a claim about a population proportion is provided here.
There are two methods of testing a claim about a population proportion: (1) Using the sample proportion from the data where a binomial distribution is approximated to the normal distribution and (2) Using the binomial probabilities calculated from the data.
The first method uses normal distribution as an approximation to the binomial distribution. The requirements are as follows: sample size is large...
3.9K