Related Experiment Video
Updated: Jun 12, 2026
11:00
Genotyping of Plant and Animal Samples without Prior DNA Purification
Published on: September 24, 2012
Genetic diversity in farm animals--a review.
L F Groeneveld1, J A Lenstra, H Eding
1Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Hoeltystr. 10, 31535 Neustadt, Germany.
Animal Genetics
|May 27, 2010
Summary
Livestock breeds offer vast genetic resources, requiring demographic data and molecular studies for conservation. Understanding breed history and diversity is crucial for effective management and future advancements.
Area of Science:
- Animal genetics
- Conservation biology
- Agricultural science
Background:
- Livestock domestication and adaptation have resulted in diverse breeds.
- Conservation of these genetic resources is vital.
- Demographic characterization and data management are essential for conservation.
Purpose of the Study:
- To summarize the genetic diversity and history of various livestock breeds.
- To highlight the importance of molecular genetic studies in livestock conservation.
- To discuss the role of demographic data and management in preserving genetic resources.
Main Methods:
- Review of molecular genetic studies on livestock breeds.
- Analysis of demographic data and production environments.
- Comparison of genetic diversity within and across breeds.
Main Results:
- An enormous variety of livestock breeds exists due to domestication and selection.
- Molecular studies enable comparison of genetic diversity and reconstruction of breed histories.
- Data management and demographic characterization are key to conservation.
Conclusions:
- Conservation of livestock genetic resources relies on integrated approaches.
- Molecular technologies are advancing the understanding of breed diversity and history.
- Continued research is expected to further benefit livestock conservation efforts.
Related Concept Videos
01:20The Central Dogma
The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
01:09Mutation, 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).Mechanisms of Genetic VariationThe original sources of genetic variation are mutations,...
01:25Genetic 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, which...
Genes exist in different versions called alleles, which...
01:43Incomplete 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.
02:18Types of Genetic Transfer Between Organisms
Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
02:18Types of Genetic Transfer Between Organisms
Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.