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 true about the Hardy-Weinberg equilibrium?
The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors. … For instance, mutations disrupt the equilibrium of allele frequencies by introducing new alleles into a population.
Which of the following is a correctly stated condition that must be true for a population to be in Hardy-Weinberg equilibrium quizlet?
Which of the following is a correctly stated condition that must be true for a population to be in Hardy-Weinberg equilibrium? The population must be large. (A small population could allow genetic drift to occur, which is a form of evolution.)
Is a population in Hardy-Weinberg equilibrium?
To know if a population is in Hardy-Weinberg Equilibrium scientists have to observe at least two generations. If the allele frequencies are the same for both generations then the population is in Hardy-Weinberg Equilibrium.
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 of natural selection?
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. … Variation exists within all populations of organisms.
Which of the following is required in order for evolution to occur quizlet?
There must be variation for the particular trait within a population. The variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).
Which of the following is necessary for evolution to occur?
Which of the following is necessary for evolution to occur? Variation must exist. When predatory snakes eat songbirds with the loudest songs, they are acting as agents of what? What type of structure is the human tailbone?
What is equilibrium population?
A population in which the allelic frequencies of its gene pool do not change through successive generations. An equilibrium can be established by counteracting evolutionary forces (e.g., a balance between selection and mutation pressures) or by the absence of evolutionary forces. See Hardy-Weinberg law.
What does it mean if a population is in genetic equilibrium?
Genetic equilibrium is the condition of an allele or genotype in a gene pool (such as a population) where the frequency does not change from generation to generation. Genetic equilibrium describes a theoretical state that is the basis for determining whether and in what ways populations may deviate from it.
How does Hardy-Weinberg expression explain that genetic equilibrium is maintained in a population?
The Hardy–Weinberg principle states that after one generation of random mating genotype frequencies will be p2, 2pq, and q2. In the absence of other evolutionary forces (such as natural selection), genotype frequencies are expected to remain constant and the population is said to be at Hardy–Weinberg equilibrium.
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.
Why do population biologists use the Hardy − Weinberg equation quizlet?
Why is the Hardy−Weinberg principle useful when studying population genetics? It explains how alleles and genotypes behave in a nonevolving population, because the Hardy-Weinberg principle gives biologists a baseline to evaluate whether or not evolution is occurring in a population.
What does the Hardy-Weinberg model show?
The Hardy-Weinberg principle states that a population’s allele and genotype frequencies will remain constant in the absence of evolutionary mechanisms. Ultimately, the Hardy-Weinberg principle models a population without evolution under the following conditions: no mutations. no immigration/emigration.