dominant allele
the allele that is expressed when present in the heterozygote
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
dominant
1. (of, or pertaining to) an allele or a gene that is expressed in an organism's phenotype, masking the effect of the recessive allele or gene when present ...
The phenotype of a genotype containing the dominant allele; the parental phenotype that is expressed in a heterozygote.
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Dominant
Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent.
Dominant Genetic Disorder
In dominant genetic disorders, if one affected parent has a disease-causing gene that dominates its normal counterpart, each child in the family has a 50% chance of inheriting the disease-causing gene and the disorder.
Mutations in the AE1 gene cause autosomal dominant and recessive forms of dRTA. All the dominant dRTA mutations investigated cause aberrant trafficking of kAE1, resulting in its intracellular retention or mistargeting to the apical plasma membrane.
Dominant
The phenotype that is observed when two alleles of a gene are present in a cell. The gene whose phenotype is expressed is the dominant allele and the allele whose phenotype is masked is the recessive allele.
Dominant or recessive?
The disease PKU is clearly inherited as a recessive trait. Only if one inherits a mutant allele from each parent will one develop the disease.
dominant Refers to an allele of a gene that is always expressed in heterozygotes.
dominant allele
In a heterozygote, the allele that is fully expressed in the phenotype.
dormancy ...
Dominant. An allele is said to be dominant if it expresses its phenotype even in the presence of a recessive allele. See Allele, Phenotype, Recessive.
Dominant gene. A gene whose phenotype is when it is present in a single copy.
Dominant An allele is dominant if its effect can be observed in the phenotype of a heterozygote.
Dominant negative mutation The mutant polypeptide disrupts the function of the wild type polypeptide in heterozygotes.
dominant An allele that produces the same character whether present in the homozygous or heterozygous state.
Dominant-negative mutation: A (heterozygous) dominant mutation on one allele blocking the activity of wild-type protein still encoded by the normal allele (often by dimerising with it) causing a loss-of-function phenotype.
Dominant gene
A gene that almost always results in a specific physical characteristic, for example, a disease, even though the patient's genome possesses only one copy.
Codominant alleles
Codominant alleles occur when rather than expressing an intermediate phenotype, the heterozygotes express both homozygous phenotypes.
Dominant
The term which Mendel (1866) introduced for a character which is manifest in all the members of the first filial generation (F1) from a cross between two pure-breeding, homozygous strains differing in respect of this character, ...
Dominant markers such as genes for green fluorescent protein or enzymes that make pigments allow researchers to easily recognize flies that carry the balancer chromosome.
Dominant and recessive phenotypes. (1) Parental generation. (2) F1 generation. (3) F2 generation.
dominant A gene that masks one or more of its alleles. See recessive.
dominant plants Those plant species in a community that provide a food base for most of the community; they usually take up the most space and have the largest biomass.
The dominant X chromosome is represented as XR.
The recessive chromosome is represented as Xr.
Since males have only one X-chromosome, if this chromosome has the red-green color blind allele, the males will have the color perception defect.
The dominant classification system is called Linnaean taxonomy, which includes ranks and binomial nomenclature.
I is dominant to i.
There are two forms of I: IA and IB but only one form of i.
6 possible genotypes, 4 phenotypes: ...
Diatom. Dominant planktonic algal form with siliceous test, occurring as a single cell or as a chain of cells
Diffusion. The net movement of units of a substance from areas of higher concentration to areas of lower concentration of that substance ...
Autosomal dominant (AD) and autosomal recessive (AR) traits are coded for by genes on the autosomes.
monohybrid dominant/recessive cross
Related Terms:
Crossing
Fertilization of an organism from an other organism with a different genetic constitution. Cf. Selfing.
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Definition of codominant :
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Autosomal dominant A gene on one of the non-sex chromosomes that is always expressed, even if only one copy is present. The chance of passing the gene to offspring is 50% for each pregnancy.
See also: autosome, dominant, gene ...
An autosomal dominant gene is one on an autosome and is always expressed, even if a single copy exists. The chance is 1:2 for passing this gene to offspring.
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See more about: Autosome ...
Porphyria a dominant genetic inability to make porphyrin
(porphyr = purple; -ia = state of‚ condition of‚ disease) ...
Most oncogenes are dominant mutations; a single copy of this gene is sufficient for expression of the growth trait.
the dominant male in a pack.
amictic egg
A thin shelled diploid egg which cannot be fertilized. Instead, it develops by parthenogenesis. It is produced by rotifers when living conditions are optimal, and will develop to produce amictic females.
Dinoflagellate: Dominant planktonic algal form, occurring as a single cell, often biflagellate.
Directional selection: Preferential change in a population, favoring the increase in frequency of one allele over another.
Achondroplasia -- the most common and well known form of short limbed dwarfism characterized by a normal trunk size with disproportionally short arms and legs, and a disproportionally large head; autosomal dominant condition.
These mutant strains would crowd out the formerly dominant strains. Samples of the most successful strains from the culture were taken at a variety of times.
The predominant type of chromatin found in cells during interphase, euchromatin is more diffuse than the other kind of chromatin, which is termed heterochromatin.
Placental mammals are the dominant form of mammal on the planet. Placental mammals deliver their young live and ready for action.
Biomes are defined as "the world's major communities, classified according to the predominant vegetation and characterized by adaptations of organisms to that particular environment" (Campbell 1996). The importance of biomes cannot be overestimated.
They are the dominant type of plant today; there are over 250,000 species. Their flowers are used in reproduction. Angiosperms evolved 125 million years ago and became the dominant plants about 100 million years ago.
Autosomal dominant Click here
Autosomal recessive Click here
Autosome A chromosome not involved in sex determination.
WILDTYPE - The native or predominant genetic constitution before mutations, usually referring to the genetic consitution normally existing in nature.
 See also: Organ, Human, Trans, Character, Plant
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