Allele frequency is a measure of the relative frequency of an allele on a genetic locus in a population. Usually it is expressed as a proportion or a percentage.
Allele frequency is the proportion of all variants (alleles) that is made up of a particular gene variant.
allele
one of a pair, or series, of genes similarly located on homologous chromosomes
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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Definition of allele :
A specific loci may contain one of several different coding sequences.
alleles whose summed effect is that of lethality for example, four alleles each of which would be lethal 25% of the time (or to 25% of their bearers), are equivalent to one lethal allele.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
"Allele" is the word that we use to describe the alternative form or versions of a gene. People inherit one allele for each autosomal gene from each parent, and we tend to lump the alleles into categories.
Allele. The different forms of a gene. Different STR repeat lengths represent different alleles at a genetic locus, i.e. 8 and 9 are different alleles of the THO1 locus.
Locus.
Allele
Alternate forms of a gene at a particular location on a chromosome. Different alleles produce variation in inherited traits such as hair colour or blood type.
Allele: Alternative form of a genetic locus; a single allele for each locus is inherited separately from each parent (e.g., at a locus for eye color the allele might result in blue or brown eyes).
allele - one variant of a particular gene; for example, there are blue and brown alleles of the eye-color gene.
anaphase - phase of mitosis where sister chromatids separate and daughter chromosomes migrate to opposite poles of the cell.
Allele One of alternative forms of a gene at a particular locus.
Alu repeat sequence A member of a family of repeated DNA sequence elements which is particularly abundant in the primates (about 3 × 105 copies in the human genome).
Alleles: Alternative forms of a genetic characteristic.
Amino acids: Small molecules that form the building blocks of proteins.
Autosome: All chro mosomes except those involved in sex determination.
Allele: One of the alternative forms of a particular gene. Each gene is comprised of two alleles, one inherited from the father and one from the mother. However, within a population, many alleles may exist for one gene.
Alleles. Alternate forms of a gene or DNA sequence, which occur on either of two homologous chromosomes in a diploid organism. (See DNA polymorphism.) ...
allele
an alternative form of a gene.
Covered in BIOL1020 Lab 7 Genetics
alpha male
the dominant male in a pack.
Alleles
Alternative forms of a gene. For example, the mutants putA601 and putA736 each have a different mutation in the putA gene.
Alleles alternate forms for genes
(allelo = one another‚ parallel)
Allelopathy when plants secrete chemicals to retard/inhibit the growth of other plants
(allelo = one another‚ parallel; pathos = disease‚ suffering) ...
Allele: A known variation (version) of a particular gene. Formerly called allelomorph.
Allelic association: see linkage disequilibrium.
alleles Alternate forms of a gene.
allergens Antigens that provoke an allergic reaction.
alpha decay Type of radioactive decay in which a radioisotope emits a large but slow-moving particle consisting of two protons and two neutrons.
allele
(al-eel) [Gk. allelon, of one another]
An alternative form of a gene.
allele frequency ...
Allele
The term coined by Bateson and Saunders (1902) for characters which are alternative to one another in Mendelian inheritance (Gk. Allelon, one another; morphe, form).
Allele frequency
Often called gene frequency. A measure of how common an allele is in a population; the proportion of all alleles at one gene locus that are of one specific type in a population.
Allele. One of several variants that can occupy a locus on a chromosome
Allopatric speciation. The differentiation of geographically isolated populations into distinct species ...
ALLELE - One of several alternate forms of a gene occupying a given locus on a chromosome or plasmid.
Alleles for a particular phenotype determine what characteristic an organism will express, as with the following example where ...
Allele
- One of two or more alternative forms of a gene which are usually recognizable by phenotypes
Alzheimer's disease (AD) ...
Allele - an alternate form of a gene. Usually there are two alleles for every gene, sometimes as many a three or four.
Homozygous - when the two alleles are the same.
allele Alternative forms of genes coding for the same trait; situated at the same locus in homologous chromosomes.
allelopathy The release of chemicals by certain plants that inhibit the growth of competing plants.
Alleles at one locus prevent the expression of alleles at another locus. This interaction is referred to as epistasis.
Example: Flower color in peas
enzyme 1 enzyme 2 ...
Alleles can increase or decrease in frequency due to drift. The average expected change in allele frequency is zero, since increasing or decreasing in frequency is equally probable.
Both alleles encode a PKG, a protein kinase (an enzyme that attaches phosphate groups to target proteins) that is activated by the "second messenger" cyclic GMP (cGMP) [More].
dominant An allele that produces the same character whether present in the homozygous or heterozygous state.
We inherit pairs of alleles from our parents for each trait. These alleles reside at a specific site on a chromosome called its locus (loci, plural). There are many genes at many loci on each of our chromosomes.
Allele -- an alternative form of a gene; any one of several mutational forms of a gene. Alpha-fetoprotein (AFP) -- a protein excreted by the fetus into the amniotic fluid and from there into the mother's bloodstream through the placenta.
>saying the differences are due to marker allele frequency differences
>and not to gene type differences. In other words the alleles that mark
>the genes of interest may occur more frequently or less frequently ...
Allele: one of two or more different chemical codes possible for a given gene. Offer variation in a given trait.
Polygenic disorders Genetic disorders resulting from the combined action of alleles of more than one gene (e.g., heart disease, diabetes, and some cancers).
The three common apolipoprotein E (ApoE) alleles differentially contribute to the risk of Alzheimer's disease (AD).
Genetic recombinant is an offspring having a non-parental allele combination. For example, crossing between parental Aa Bb and aa bb can have offsprings with the following non-parental genotypes: Aa bb or aa Bb.
Used in detection of genetic disease alleles etc.
RT-PCRPCR amplification from an RNA template. The first step involves synthesis of a single strand of cDNA on the RNA template using reverse transcriptase.
 See also: Gene, Chromosome, DNA, Alleles, Organ
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