In a population of 75 mice, what would be the size of their gene pool for a particular gene?

Which condition can lead to two populations becoming different species?

Which of the following conditions can lead to two populations becoming different species? Individuals in the two populations mate at different times. Individuals in the two populations have significant genetic differences from one another. A barrier to gene flow exists between the two populations.

What can be the number of alleles of a particular gene in a population?

An allele frequency is calculated by dividing the number of times the allele of interest is observed in a population by the total number of copies of all the alleles at that particular genetic locus in the population. Allele frequencies can be represented as a decimal, a percentage, or a fraction.

How can you determine the gene pool of a population?

Allele frequency refers to how common an allele is in a population. It is determined by counting how many times the allele appears in the population then dividing by the total number of copies of the gene. The gene pool of a population consists of all the copies of all the genes in that population.

Which scenario would represent a situation that reduces the effect of genetic drift?

Which scenario would represent a situation that reduces the effect of genetic drift? The population is very large. If you examine the gene pool of a population that is evolving due to genetic drift, what do you predict will occur with the allele frequencies?

How does population size affect genetic drift?

It should now be clear that population size will affect the number of alleles present in a population. But small population sizes also introduce a random element called genetic drift into the population genetics of organisms. Genetic drift leads to fixation of alleles or genotypes in populations. …

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What are the 5 sources of genetic variation?

Genetic variation is caused by:

  • mutation.
  • random mating between organisms.
  • random fertilization.
  • crossing over (or recombination) between chromatids of homologous chromosomes during meiosis.

How do you determine the number of alleles in a population?

Allele frequency refers to how common an allele is in a population. It is determined by counting how many times the allele appears in the population then dividing by the total number of copies of the gene. The gene pool of a population consists of all the copies of all the genes in that population.

What is an example of a gene pool?

A gene pool is a collection of all the genes in a population. This can be any population – frogs in a pond, trees in a forest, or people in a town.

What is allele number?

An allele frequency is the proportion of the total number of alleles in a population represented by a particular allele. For any polymorphism other than those present on the X or Y chromosome, each individual carries two alleles per locus, one inherited from the mother, the other from the father.

What does Hardy Weinberg measure?

In population genetics studies, the Hardy-Weinberg equation can be used to measure whether the observed genotype frequencies in a population differ from the frequencies predicted by the equation.

How do you calculate Hardy Weinberg?

For a population in genetic equilibrium: p + q = 1.0 (The sum of the frequencies of both alleles is 100%.) This page contains all the information you need to calculate allelic frequencies when there are two different alleles.

What are the three main sources of genetic variation?

For a given population, there are three sources of variation: mutation, recombination, and immigration of genes. However, recombination by itself does not produce variation unless alleles are segregating already at different loci; otherwise there is nothing to recombine.

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What is genetic drift and an example?

Genetic drift is a change in the frequency of an allele within a population over time. This change in the frequency of the allele or gene variation must occur randomly in order for genetic drift to occur. … A population of rabbits can have brown fur and white fur with brown fur being the dominant allele.

What are the two types of genetic drift?

There are two major types of genetic drift: population bottlenecks and the founder effect. A population bottleneck is when a population’s size becomes very small very quickly.

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