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.
What are the assumptions of the Hardy-Weinberg equilibrium model quizlet?
Terms in this set (7)
1) Allele frequencies will not change from generation to generation. 2) Genotype proportions will occur according to the square law. 3) HW Equilibrium occurs independent of allele frequencies.
What are the five assumptions of the 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. If indv. …
- No natural selection. Differences in the survival and reproductive success of indvs. …
- Extremely large population size. …
- No gene flow.
What are the 4 conditions of Hardy-Weinberg equilibrium?
The conditions to maintain the Hardy-Weinberg equilibrium are: no mutation, no gene flow, large population size, random mating, and no natural selection. The Hardy-Weinberg equilibrium can be disrupted by deviations from any of its five main underlying conditions.
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 p2+2pq+q2= 1, with p2 equal to the frequency of the homozygous dominant genotype, 2pq equal to the frequency of the heterozygous genotype, and q2 equal to the frequency of the recessive genotype.
What is meant by an allele?
An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. … Alleles contribute to the organism’s phenotype, which is the outward appearance of the organism. Some alleles are dominant or recessive.
What is the 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 the physical location of a gene within the genome called?
The physical location of a gene within the genome is called the: locus.
How does evolution occur quizlet?
The process in which organisms change over time and is based off phenotype. When there is a change in the environment and the gene pool causing some to die and some to live. You just studied 11 terms!
What is a phenotype in genetics?
The term “phenotype” refers to the observable physical properties of an organism; these include the organism’s appearance, development, and behavior. An organism’s phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.
What is the best definition for evolution?
In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all species? are related and gradually change over time.
How do you know if it’s 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 is Hardy-Weinberg equilibrium used for?
Hardy-Weinberg Equilibrium (HWE) is used to estimate the number of homozygous and heterozygous variant carriers based on its allele frequency in populations that are not evolving.