Genotype frequency
Encyclopedia
In population genetics
, the genotype frequency is the frequency or proportion (i.e. 0 < f < 1) of genotype
s in a population
.
It may be denoted thus:
Compare allele frequency
.
The Hardy-Weinberg law predicts genotype frequencies from allele frequencies under certain conditions, in which case:
Genotype frequencies may be represented by a De Finetti diagram
.
Population genetics
Population genetics is the study of allele frequency distribution and change under the influence of the four main evolutionary processes: natural selection, genetic drift, mutation and gene flow. It also takes into account the factors of recombination, population subdivision and population...
, the genotype frequency is the frequency or proportion (i.e. 0 < f < 1) of genotype
Genotype
The genotype is the genetic makeup of a cell, an organism, or an individual usually with reference to a specific character under consideration...
s in a population
Population
A population is all the organisms that both belong to the same group or species and live in the same geographical area. The area that is used to define a sexual population is such that inter-breeding is possible between any pair within the area and more probable than cross-breeding with individuals...
.
It may be denoted thus:
Compare allele frequency
Allele frequency
Allele frequency or Gene frequency is the proportion of all copies of a gene that is made up of a particular gene variant . In other words, it is the number of copies of a particular allele divided by the number of copies of all alleles at the genetic place in a population. It can be expressed for...
.
The Hardy-Weinberg law predicts genotype frequencies from allele frequencies under certain conditions, in which case:
Genotype frequencies may be represented by a De Finetti diagram
De Finetti diagram
A de Finetti diagram is a ternary plot used in population genetics. It is named after the Italian statistician Bruno de Finetti and is used to graph the genotype frequencies of populations, where there are two alleles and the population is diploid...
.