When a population is in Hardy-Weinberg equilibrium for a gene, it is not evolving, and allele frequencies will stay the same across generations. There are five basic Hardy-Weinberg assumptions: no mutation, random mating, no gene flow, infinite population size, and no selection.
What are the 5 conditions for Hardy-Weinberg equilibrium quizlet?
Terms in this set (5)
- No mutations. The gene pool is modified if mutations alter alleles or if entire genes are deleted or duplicated. …
- Random mating. …
- No natural selection. …
- Extremely large population size (no genetic drift) …
- No gene flow (emigration, immigration, transfer of pollen, etc)
What is one condition that must be met for a population to be in genetic equilibrium quizlet?
What is one condition that must be met for a population to be in genetic equilibrium? There is no genetic drift. A population has a small size, high level of genetic drift, and very little migration into the population.
What makes a population in Hardy-Weinberg equilibrium?
A population of alleles must meet five rules in order to be considered “in equilibrium”: 1) No gene mutations may occur and therefore allele changes do not occur. 2) There must be no migration of individuals either into or out of the population. 3) Random mating must occur, meaning individuals mate by chance.
What criteria must a population meet in order to stay in Hardy-Weinberg equilibrium quizlet?
The Hardy-Weinberg model states that a population will remain at genetic equilibrium as long as five conditions are met: (1) No change in the DNA sequence, (2) No migration, (3) A very large population size, (4) Random mating, and (5) No natural selection.
Which is not a condition for a population to be at Hardy-Weinberg equilibrium quizlet?
Which of the following is NOT a condition of the Hardy-Weinberg equilibrium? Mutations cannot occur in a population. Mating within a population must be random.
Which of the following are agents that help maintain variation in a population?
For a given population, there are three sources of variation: mutation, recombination, and immigration of genes.
Which of the following is not a type of natural selection?
Artificial selection is not a type of natural selection, obviously, but it did help Charles Darwin obtain data for his theory of natural selection. Artificial selection mimics natural selection in that certain traits are chosen to be passed down to the next generation.
What does it mean for a population to be in Hardy-Weinberg equilibrium quizlet?
Hardy-Weinberg equilibrium: the condition in which both allele and genotype frequencies in a population remain constant from generation to generation unless specific disturbances occur.
What is true about positive selection for a trait?
What is true about positive selection for a trait? … The frequency of the trait increases. Future generations of offspring of parents with the trait are more likely to survive.
What are the 5 evolutionary mechanisms?
There are five key mechanisms that cause a population, a group of interacting organisms of a single species, to exhibit a change in allele frequency from one generation to the next. These are evolution by: mutation, genetic drift, gene flow, non-random mating, and natural selection (previously discussed here).
What are the five conditions of the Hardy Weinberg Principle What does it mean if they are not met?
There are five basic Hardy-Weinberg assumptions: no mutation, random mating, no gene flow, infinite population size, and no selection. If the assumptions are not met for a gene, the population may evolve for that gene (the gene’s allele frequencies may change).
Which assumption must be met for a population to be in Hardy-Weinberg equilibrium for a specific gene?
The five assumptions of Hardy-Weinberg equilibrium are a large population size, no natural selection, no mutation rate, no genetic drift, and random mating.
Which of these is one of the conditions for Hardy-Weinberg equilibrium apex?
The conditions to maintain the Hardy-Weinberg equilibrium are: no mutation, no gene flow, large population size, random mating, and no natural selection.
What factors can cause an increase in genetic diversity?
Sources of Genetic Variation
Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation.
What is the main purpose of population genetics?
Population genetics seeks to understand how and why the frequencies of alleles and genotypes change over time within and between populations. It is the branch of biology that provides the deepest and clearest understanding of how evolutionary change occurs.