If any one of these assumptions is not met, the population will not be in Hardy-Weinberg equilibrium. Instead, it may evolve:
allele frequencies may change from one generation to the next
. Allele and genotype frequencies within a single generation may also fail to satisfy the Hardy-Weinberg equation.
What is a consequence of violating the Hardy-Weinberg genetic equilibrium assumptions quizlet?
changes in allele frequency caused by random events
. consequence of violating the Hardy-Weinberg genetic equilibrium assumptions. the most common kind of selection, which results in the average form of a trait.
What happens if the Hardy-Weinberg equilibrium is violated?
When this assumption is violated and by chance some individuals contribute more alleles than others to the next generation,
allele frequencies may change
. This mechanism of allele change is called genetic drift.
What happens when genetic equilibrium in a population is disrupted?
The Hardy-Weinberg equilibrium can be disturbed by a number of forces, including mutations, natural selection, nonrandom mating, genetic drift, and gene flow. For instance, mutations disrupt the equilibrium of
allele frequencies by introducing new alleles into a population
.
Which of the following violates an assumption of Hardy-Weinberg?
Explanation: In Hardy-Weinberg equilibrium,
deviations
are violations of the assumptions of the Hardy-Weinberg theory. The assumptions of the Hardy-Weinberg theoru include random mating, large population size, sexual reproduction, and the absence of migration, mutation and selection.
Which does not affect Hardy-Weinberg equilibrium?
The Hardy-Weinberg Law states: In a large, random-mating population that is not affected by the
evolutionary processes of mutation
, migration, or selection, both the allele frequencies and the genotype frequencies are constant from generation to generation.
What is the net effect of Hardy-Weinberg equilibrium is met?
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 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
. -A population in Hardy-Weinburg equilibrium is not changing genetically, not evolving.
What are the two equations for Hardy-Weinberg equilibrium What does each variable represent?
The frequency of genotypes in a population can be represented by
p
2
+2pq+q
2
= 1
, with p
2
equal to the frequency of the homozygous dominant genotype, 2pq equal to the frequency of the heterozygous genotype, and q
2
equal to the frequency of the recessive genotype.
What is the purpose of calculating Hardy-Weinberg equilibrium?
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
.
What is expected for a population to remain in genetic equilibrium?
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.
What is one condition that must be met for a population to be genetic equilibrium?
In an equilibrium population, allele and genotype frequencies do not change over time. The conditions that must be met are
no mutation, no migration, very large population size, random mating, and no natural selection
.
What do changing frequencies indicate in a population?
In a population, allele frequencies are a reflection of genetic diversity. Changes in allele frequencies over time can indicate that
genetic drift is occurring
or that new mutations have been introduced into the population.
What are three assumptions of the Hardy-Weinberg theorem quizlet?
The Hardy-Weinberg model makes the following assumptions:
no selection at the gene in question; no genetic drift; no gene flow; no mutation; random mating
.
Why does natural selection violate Hardy-Weinberg assumptions?
Natural Selection, Genetic Drift, and Gene Flow Do Not Act in Isolation in Natural Populations. In natural populations, the mechanisms of evolution do not act in isolation. … When one
or more of these forces are acting in a population
, the population violates the Hardy-Weinberg assumptions, and evolution occurs.
What does the Hardy Weinberg principle predict?
The Hardy–Weinberg principle provides a mathematical model, which predicts that
allele frequencies will not change from generation to generation
.
