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evolution within a species. the allele frequencies in a gene pool of a population

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A small genetic change such as a single mutation may result in what?

genetic drift....


What genetic change is always a result of evolution?

Evolution is not a cause of genetic change: it is the effect of genetic change.


Why does a mutation in a sex cell have potential for great effect?

A mutation in a sex cell has the potential for great effect because it can be passed on to offspring and result in genetic changes in future generations. This can lead to a variety of outcomes, such as genetic disorders or adaptations that may affect the fitness of the species.


What term defines change changes in allele frequency that have a big effect in small population?

Genetic driftChanges in the frequency of alleles within a population is called genetic drift. Over time, this can cause a significant phenotypic shift from other populations of the same species that have not had the same genetic drift. Given enough time, genetic drift can be significant enough to cause the affected population to be reproductively isolated from the rest of its species and eventually will develop into a new species.


What mechanisms of evolution decreases the genetic diversity as a species?

Genetic drift, founder effect, and population bottlenecks are mechanisms that can decrease genetic diversity in a species. These mechanisms result in a reduction of variation within a population due to random events that affect the genetic makeup of the population.


What is meant by fitness in Darwinian evoultion?

Darwinian fitness measures the reproductive success of a species. This measures how much of a contribution a specific individual contributes to their species' gene pool, and whether certain gene mutations within an individual will or will not have an overall effect on the gene pool of a species as a whole.


What are two possible change in a environment that can effect a species?

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What factors effect the survival and change of a species over time?

Factors that can affect the survival and change of a species over time include environmental changes, competition for resources, predation, genetic variation, reproductive success, and adaptation. Species that can adapt to changing conditions, reproduce successfully, and outcompete others are more likely to survive and evolve over time.


What is genetic drift-?

Genetic drift is the random change in the frequency of alleles within a population's gene pool. It can cause the genetic composition of a population to change in one direction or another. Combined with natural selection, genetic drift is a principal force in biological evolution.Another Answer:Genetic drift is where random chance events which can effect the gene's abundance in a population, regardless of whether the gene is advantageous or not. For example, a natural disaster kills animals indiscriminately, regardless of their genetic makeup.


What is genic drift?

Genetic drift is change in allele frequencies due to random chance events. Two types are the Founder effect and the Bottleneck effect. The founder effect is when a subset of a population goes to a new are where there are no other of that same species. The bottleneck effect is when a large population is reduced to a small population. Genetic drift decreases variation in a population and has a greater effect on a smaller population than a larger one.


What effect does genetic drift have on organisms?

Genetic Drift (or allelic drift) is the pseudo-random chance that a minor genetic change will eventually become a fixed genetic inheritance in a specific organism. IT is the underlying principal in the theory of evolution. There are many equations and probabilities involved, but the basic explanation is that as the number of generations with the genetic change increases, so does the chance that the change will become the norm, rather than the aberration.


Do humans have more or less genetic variation than most species?

Humans have lower genetic variation compared to other species due to the bottleneck effect experienced in human evolution. This is because human populations are relatively small and have undergone significant reductions in genetic diversity.

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