Allele

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.
Full article >>>

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 ...
Full article >>>

An allele is any one of a number of alternative forms of the same gene occupying a given locus (position) on a chromosome.
Full article >>>

Search for allele in these other databases too
Definition of allele :
A specific loci may contain one of several different coding sequences.
Full article >>>

AKA: mutant Huntington allele, Huntington allele
A version of the Huntington gene that contains a higher than normal number of repeats. Individuals with the HD allele will develop Huntington's Disease.
Full article >>>

Definition: An alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome. For example, the gene for seed shape in pea plants exists in two forms, one form or allele for round seed shape (R) and ...
Full article >>>

Allele frequency is a term of population genetics that is used in characterizing the genetic diversity of a species population, or equivalently the richness of its gene pool. Allele frequency is defined as follows: ...
Full article >>>

Different alleles produce variation in inherited characteristics such as hair color or blood type. In an individual, one form of the allele (the dominant one) may be expressed more than another form (the recessive one).
Full article >>>

Codominant alleles occur when rather than expressing an intermediate phenotype, the heterozygotes express both homozygous phenotypes. An example is in human ABO blood types, the heterozygote AB type manufactures antibodies to both A and B types.
Full article >>>

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).
Full article >>>

Allele-specific ligation: Technique permitting discrimination of two allele at locus by providing two short synthetic oligonucleotides that would bind ajjacent to teach other on amplified DNA fragment, and would be ligated in presence of DNA ligase; ...
Full article >>>

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).
Full article >>>

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.
Full article >>>

Allele
One of the alternative forms of a gene. Most genes in natural populations occur in more than one form.
Biogeography
The study of the geographic distributions of species and the historical explanation of these patterns.
Full article >>>

Allele. One of several variants that can occupy a locus on a chromosome
Allopatric speciation. The differentiation of geographically isolated populations into distinct species ...
Full article >>>

ALLELE - One of several alternate forms of a gene occupying a given locus on a chromosome or plasmid.
Full article >>>

alleles: different forms of the same gene.
alveoli: microscopic air sacs that are surrounded by a rich network of blood vessels in mammalian lungs that function in gas exchange; the air sacs are at the end of the bronchioles.
Full article >>>

Alleles
Alternative forms of a gene. For example, the mutants putA601 and putA736 each have a different mutation in the putA gene.
Full article >>>

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) ...
Full article >>>

Allele
: A known variation (version) of a particular gene.
Formerly called allelomorph.
Allelic association ...
Full article >>>

allele frequency
The proportion of a particular allele in a population.
allergic reaction ...
Full article >>>

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.
Full article >>>

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 ...
Full article >>>

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.
Full article >>>

An allele may increase — or decrease — in frequency simply through chance. Not every member of the population will become a parent and not every set of parents will produce the same number of offspring.
Full article >>>

2e- Inheritance of alleles from both parents
2g - Predicting genotype of offspring from parents.
Demonstrate how an organism's genotype depends on the genotype of its parents.
Full article >>>

(See Electrophoresis.) Alleles. Alternate forms of a gene or DNA sequence, which occur on either of two homologous chromosomes in a diploid organism. (See DNA polymorphism.) Alternative mRNA splicing.
Full article >>>

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.
Full article >>>

Allele: one of two or more different chemical codes possible for a given gene. Offer variation in a given trait.
Full article >>>

The three common apolipoprotein E (ApoE) alleles differentially contribute to the risk of Alzheimer's disease (AD).
Full article >>>

Genes determining Greek or Roman status are alleles of the same locus, the MAT locus.
Diploid cells resulting from the mating of Romans and Greeks do not make any pheromones or pheromone receptors.
Full article >>>

In cases of maternal effect, the transmission pattern of the alleles is the same as in standard Mendelian genetics but the action of the gene occurs a generation later.
Full article >>>

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.
Full article >>>

the separation of homologous chromosomes during anaphase 1 of meiosis, producing gametes containing only one allele of each gene.
Full article >>>

Used in detection of genetic disease alleles etc.
RT-PCR PCR amplification from an RNA template. The first step involves synthesis of a single strand of cDNA on the RNA template using reverse transcriptase.
Full article >>>


'"/>