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Neutral genetic diversity in conservation genetics - Coggle Diagram
Neutral genetic diversity in conservation genetics
Inbreeding Depression and hybrid vigor
Both of these components can have a big influence on an individual fitness, and it arises from being exposed to harmful recessive genetic mutations.
Outcrossing and migration are factors that can eventually cause species to reduce and cause species to have no adaptation.
As these populations start to separate and evolve into different species, they eventually become infertile and are incapable of surviving due to deleterious genetic constitution.
Inbreeding depression and hybrid vigor are two factors that are known as conservation genetics.
These two factors of conservation genetics can connect the sum of neutral genetic diversity to an individual's fitness within a population.
Low Genetic Diversity and Mutation Load
A population that contains fewer species in conservative genetics is known to have fewer mutation load compared to a population containing more species.
Instant feedback to the adaptation in a population size or inbreeding can be shown due to recessive mutations in a mutation load.
Selection is unsuccessful and random genetic drift influences allele frequency changes are showed by low genetic diversity.
This results in a reduced fitness. This can cause a decreasing in the number of species in a population and eventually lead to their extinction.
Adaptive potential
Higher genetic diversity within a population usually means they have a more adaptive potential.
An increase in levels of genetic variation can cause species to better adapt to the changing environmental factors causing them to be more suitable for conservation efforts.
Some studies have shown that this theory might not always exist in a population.
For example, the bottlenecked populations showed strong genomic adaptation and their reduced genetic diversity has not affected their ability to adapt to local environment changes.
Adaptive potential is the ability of a population to respond to phenotypic/ molecular changes allowing species to adapt to environmental changes. This can increase a species' fitness in a new environment and, therefore, prevent extinction.
Conservation Genetics and Mass Extinction
If we can increase and learn to understand the knowledge of population genetic processes that have been affecting natural populations it could eventually help lead us to more conservation strategies.
For example, it can help us decide which species and which genetic rescue could be most successful.
Restoring and conserving natural ecosystems is the best way to preserve biodiversity.
If we can have a better understanding of population genetic restrictions it can allow us to discover the results of reduced population size, interbreeding, and adaptive potential.
This can lead to improved dynamics of genetic rescue.
Are species with Genetic Diversity Endangered?
There are a couple of things that can influence neutral genetics. Mutation is one factor and genetic drift is another factor that are focused on in this article.
In a population that is small in size, a higher rate of genetic drift leads to a decreased number of neutral diversity. Therefore, the outcome of a small population with high levels of genetic drift showed that several endangered species showed low levels of neutral diversity.
Genetic factors are not the main cause of the extinction of species.
A few key factors that are known to decrease the growth rates of species which can eventually lead to extinction are overkill, habitat destruction, fragmentation, and pollution. However, genetic components can add to the final extinction of an inbred population.
An indicator of interbreeding depression and increased genetic drift is known as low genetic diversity.
A decrease in an individual's life span/health and a reduction in the number of people in a given area is related to low genetic diversity.
My response
Yes I think they argued that their is significance of neutral genetic diversity in conservation genetics sufficiently. They gave numerous examples of different population and species explaining why or why not the studies proved the point they were discussing.
They included figures, tables, and graphs to better explain what they were discussing which helps argue their point sufficiently.
Citation:
Teixeira, J. C., & Huber, C. D. (2021, February 21). The inflated significance of neutral genetic diversity in conservation genetics. PNAS.
http://www.pnas.org/cgi/,doi/10.1073/pnas.0907531107