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1. Mutation
2. Migration (Gene Flow): both Immigration and emigration.
3. Genetic Drift
4. Sexual Selection (Non-random mating)
5. Natural Selection: those most fit survive to pass on their genes to the next generation.
What else can I help you with?
How are alleles frequencies related to gene pools?
The frequency of the allele represents the percentage of that allele in the gene pool
If the actual allele frequencies in a population do not match genotype frequencies predicted by the Hardy Weinberg equation what is the population?
The population is evolving.
How does allele cause a trait in an organism?
the allele causes a certain type of protein to form-apex
What is the continuous gradation in allele frequencies over space is known as?
Evolution. Interesting way to put, evolution is the change in allele frequency over time in a population of organisms.
What is non random association of alleles at two or more loci?
Allele association. Linkage disequilibrium- measure of correlation in allele frequencies between two loci. Non-random association indicated linkage disequilibrium while random does not.
Do Stable allele frequencies prevent microevolution?
No, stable allele frequencies do not prevent microevolution. Microevolution involves changes in allele frequencies within a population over time, even if those frequencies are stable for a period. Evolution can still occur through mechanisms such as genetic drift, selection, and gene flow, even if allele frequencies are temporarily stable.
Does natural selection on single-gene trait cannot lead to changes in allele frequencies?
Natural selection acting on a single-gene trait can lead to changes in allele frequencies within a population. If individuals with a certain allele have a selective advantage, they are more likely to survive and reproduce, leading to an increase in the frequency of that allele in the population over time. This process is known as directional selection.
What are allele frequencies used for?
Allele frequencies are used to study genetic variation within a population. They can provide information about the genetic diversity, evolution, and potential for certain traits or diseases in a population. By tracking changes in allele frequencies over time, researchers can gain insights into how populations evolve and adapt to their environments.
When microevolution occurs what kind of frequencies change?
allele
What are the changes of allele frequency in a small population that is due to random chance and don't follow the laws of probability?
Random changes in allele frequency are due to genetic drift.
The influence of genetic drift on allele frequencies increases as?
The influence of genetic drift on allele frequencies increases as the population size decreases. In smaller populations, random fluctuations in allele frequencies due to sampling effects have a greater impact on the overall genetic composition. Additionally, genetic drift is more pronounced in isolated populations where there is limited gene flow, leading to greater changes in allele frequencies over time.
Under ideal conditions how do allele frequencies change over time?
Under ideal conditions, allele frequencies can change over time due to genetic drift, natural selection, gene flow, and mutations. These factors can cause certain alleles to become more or less common in a population, leading to changes in allele frequencies. Over many generations, these changes may result in evolution occurring within the population.
What are the potential causes of micro evolution?
Potential causes of microevolution include mutations in DNA, gene flow between populations, genetic drift (random changes in gene frequency), natural selection (favoring certain traits), and changes in environmental conditions. These factors can lead to changes in allele frequencies within a population over time.
Are allele frequencies more likely to remain stable in large populations than in small populations?
Yes, allele frequencies are more likely to remain stable in large populations due to the effects of genetic drift being more pronounced in small populations. In small populations, random events can lead to significant changes in allele frequencies, whereas in large populations, genetic drift has less impact and allele frequencies are more likely to remain stable over time.
The work of hardy and weinberg led to what statement about evolution?
The Hardy-Weinberg principle provides a mathematical model to predict genotype frequencies in a population that is not evolving. If genotype frequencies in a population do not match the predicted frequencies, then evolution (such as genetic drift, natural selection, or gene flow) is likely occurring.
Which is an example of genetic drift?
Allele frequencies change randomly each generation. APEX
What is the type of equilibrium that occurs when allele frequencies do not change?
The type of equilibrium where allele frequencies do not change is called Hardy-Weinberg equilibrium. This equilibrium occurs in an idealized population where certain assumptions are met, such as random mating, no mutation, no migration, no natural selection, and a large population size. In Hardy-Weinberg equilibrium, the genotype frequencies can be predicted using the allele frequencies.
