相关实验视频

Updated: May 26, 2025

Induction and Evaluation of Inbreeding Crosses Using the Ant, Vollenhovia Emeryi
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Induction and Evaluation of Inbreeding Crosses Using the Ant, Vollenhovia Emeryi

Published on: October 5, 2018

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厄瓜多尔霍尔斯坦-弗里西亚牛的父系血统:人口结构,近亲繁殖的进化和遗传多样性

Luis F Cartuche-Macas1,2, Miguel A Gutierrez-Reinoso3,4, Edilberto Chacón3

  • 1Instituto de Investigación de la Biodiversidad "Pachamamata Kamak", Universidad Intercultural de las Nacionalidades y Pueblos Indígenas (UINPIAW), Quito, Ecuador.

PloS one
|February 25, 2025
PubMed
概括

厄瓜多尔霍尔斯坦-弗里斯牛的辅助生殖技术 (ART) 由于有限的父系血统,显著减少了遗传多样性 (GD). 需要采取战略来增加有效的种群规模 (Ne),并纳入外来基因来减轻内生育.

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相关概念视频

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Gene Flow

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

Overview
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Hardy-Weinberg Principle

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.
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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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Formation of Species

Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.
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Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
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