Ruling; governing; prevailing; controlling; predominant; as, the dominant party, church, spirit, power.
A genetic trait that is expressed even if only one gene in the pair code for it; it will "override" a gene that codes for a recessive trait.
a trait that is apparent even when the gene for that disorder is inherited from only one parent. See autosomal dominant disorder, recessive, gene.
An allele that is almost always expressed, even if only one copy is present. See also: gene, genome
Dominant gene [or dominant allele] is a gene which, when present, produces a certain trait, and "dominates" over a recessive allele in the gene pair.
used to describe a gene that causes a parental characteristic it controls to occur in any offspring or the characteristic itself
Form of expression of a gene, in which the phenotype of the dominant form is expressed over the recessive form.
Refers to a characteristic that is expressed when the gene for it is inherited from only one parent. A dominant gene will block the effects of a single healthy (wild type) gene, so normally only one copy of the mutation is enough to cause the characteristic to appear.
In genetics, capable of expression when carried by only one of a pair of homologous chromosomes.
One of a pair of alleles that suppresses the expression of the other in heterozygous (having one dominant and one recessive allele) conditions.
Refers to the member of a pair of alleles that is expressed in the phenotype of the organism while the other allele is not, even though both alleles are present. Also refers to the phenotype expressed by a dominant allele. Opposite of recessive.
A relationship among genes such that if the gene on one chromosome specifies one developmental path, and the corresponding gene on the other chromosome specifies a different path, a gene that is dominant will govern the outcome. If a gene is recessive, it will govern the outcome only if the corresponding gene on the other chromosome redundantly specifies the same (recessive) trait.
An allele that determines phenotype even when heterozygous. Also the trait controlled by that allele.
Refers to a characteristic that is apparent even when the relevant gene is present in only one copy. A dominant disorder can be inherited from only one parent.
describing a phenotypic character state or an allele, hiding an alternative character state or allele when both are present in the heterozygous state.
A gene that shows the characeristics of another gene.
A dominant allele controls the phenotype produced, even in the presence of another allele. For example, dark colored eyes are dominant over light colored eyes, so an individual with an allele for brown eyes will have that phenotype, even if he or she also has an allele for blue eyes. (opposite of 'recessive')
an allele that expresses itself.
Describes a gene that covers up the physical expression of its paired allele or recessive gene. For example, black-and-white, Holsteins (B) is dominant over red-and-white (b). Thus, BB and Bb Holsteins are black-and-white, whereas bb individuals are red-and-white.
The form of a gene (allele) that dominates. Alleles that determine the phenotype displayed in a heterozygote with another (recessive) allele. The normal prcd allele dominates over the mutant allele, as do the normal rcd1, normal CSNB and normal CLAD alleles.
commanding, controlling, or prevailing over all others; exerting authority or influence as in dominant culture or dominant trait.
the trait which has a detectable phenotype in a heterozygous gene pair; a dominant allele is symbolized using a capital letter (e.g. B).
A version of a gene that produces an effect (phenotype) even when it occurs as only one of the two copies present in a cell. A dominant human gene will exert its effect in half of the progeny of a carrier.
a trait governed by an allele that can be expressed in the presence of another, different allele. Dominant alleles prevent the expression of recessive alleles in heterozygotes.
condition in which a certain trait can be reproduced by breeding the homozygous (see) animal to a normal and achieve 100% of the respective co-dominant trait.
only one copy of a gene is necessary for a trait to be exhibited. At least one of the parents would also exhibit this same trait.
A disease or trait that is expressed in individuals even when it is present in only one of the alleles of a gene pair. Males and females are equally likely to be affected, and the trait can be passed on to successive generations of a family. Examples: neurofibromatosis, Huntington disease.
the stronger gene of a pair of genes.
the one of a pair of alleles that masks the effects of the other when both are present in the same cell or organism.
of genes; producing the same phenotype whether its allele is identical or dissimilar
An allele that expresses its phenotypic effect even when heterozygous with a recessive allele.
Refers to an allele of a gene that is always expressed in heterozygotes.
When referring to genes, a dominant gene is one that almost always will be expressed and lead to a specific physical characteristic. A dominant trait is the one that will be expressed in individuals that are either homozygous or heterozygous.
an allele whose effects are always shown
A gene or allele that is expressed or "shown" in the phenotype. Dominant genes mask or "hide" recessive genes.
In genetics, a trait or characteristic that will be expressed in the offspring even though it is carried on only one of the homologous (parental) chromosomes.
The property of an allele whereby possessing either one or two copies of the allele results in the same phenotype. Contrast with recessive.
an allele, or the corresponding trait, that is expressed while masking the expression of the alternative allele in the heterozygote, contrast with recessive.
Where one allele at a locus is expressed, while the other is masked.
A gene that almost always results in a specific physical characteristic even though the patient's genome possesses only one copy. With a dominant gene, the chance or passing on the gene, which may cause a condition or disease, to children are 50-50 in each pregnancy.
A genetic trait or disorder is dominant when only one copy of the mutated gene is necessary for the trait to develop. A recessive trait or disorder develops when two copies of the mutated gene are inherited.
a condition expressed in individuals who have one copy of a defective gene
When a gene is inherited in a dominant fashion, this means that the mutated allele will be expressed even when there is one normal copy and one mutated copy. eg. Huntington's Disease. (opposite to recessive)
When the presence of only one copy of a particular gene results in the inheritance of an observable trait or disease.
A gene that almost always results in the expression of a certain characteristic in an individual, even though an individual's genome only possesses one copy of the gene. This gene always has a 50-50 chance of being passed on to a child.
Hereditary effect caused by a single mutated gene.
A gene, that when present, is expressed in the phenotype.
describing a genetic trait where a gene from one parent overpowers the effect of a gene from the other parent
The form (allele) of the gene that appears to dominate or mask another form of the gene when two different forms are present, i.e. when the individual is heterogygous (e.g Hh) for that gene. Dominant alleles are often written in capital letters. See recessive.
A trait that is "expressed." One that "wins" over a recessive trait in determining how the offspring will develop.
Allele that determines phenotype in a heterozygous individual carrying another recessive allele.
A part of a gene that is always expressed when it is there.
A trait expressed in a heterozygote.
(1) The rat who is "in charge," the "alpha" rat. (2) A genetic trait that is expressed even when the genotype is heterozygous.
An allele that is expressed in a heterozygote.
The visible expression of one gene over its counterpart on the other chromosome whose affects are masked.
A condition that is manifest in heterozygotes.
Every cell contains two copies of each gene. Where only one of the gene copies or allele is mutated, and the other allele is 'correct', but the person is affected by a disorder due to that mutation, the mutation is described as dominant. The mutated gene is said to be dominant over the other 'correct' copy of the gene. A disorder or characteristic caused by a dominant gene mutation only requires one of the genes to be mutated for the person to be affected.
Said of a genetic trait that masks the effects of recessive genes.
a pattern of inheritance in which a gene mutation causes a disease or trait even when present in only one copy; a dominant disease is usually seen in every generation. Click here to return to the passage.
A gene that will keep other genes in the same locus from affecting the appearance of a trait in the animal.
a gene which will express its phenotype even in the presence of a recessive gene
A genetic trait is considered dominant if it is expressed in a person who has only one copy of that gene. (In genetic terms, a dominant trait is one that is phenotypically expressed in heterozygotes). See the entire definition of Dominant
gene that exerts its full phenotypic effect regardless of its allelic partner, thus masking the partner's effects.
Capable of expression when carried by only one of a pair of partner chromosomes in the cells of the body.
an interaction between modalities where only one has syntax and thus controls the primary expression of meaning
Having power and influence. In genetics, a dominant gene is a gene that expresses its instructions.
The extent to which a gene is expressed; dominant indicates that it is expressed a lot.
In genetics, a trait or characteristic that is manifested when it is carried by only one of a pair of homologous chromosomes.
produces the same phenotype whether paired with an identical or dissimilar gene.
a gene that almost always results in a specific characteristic, even when the person's genome only contains one copy.
A relative term describing the relationship of one allele to a second at the same locus when an animal heterozygous for these alleles expresses the same phenotype as an animal homozygous for the first allele. The second allele of the pair is considered recessive.
In human genetics, it describes any trait that is expressed in the heterozygous condition.
An allele whose expression overpowers the effect of a second form of the same gene.
The opposite of recessive. A gene that is visible when paired with other genes. The most expressive gene at the allele of a chromosome pair.
Controlling. Usually applied to controlling trait or gene governing genetic patterns.
an allele that overpowers another is dominant.
In dominant inheritance if one of a pair of genes is altered the individual possessing that gene will show signs of the relevant disorder. In any pregnancy there is a 50 percent chance that he or she will pass the altered gene on giving rise to a child who is also affected.
When different genetic variations (alleles) occur at the same location (locus) on the chromosome and one of the variations (alleles) is not expressed when the other is present, the trait which is expressed is considered dominant.
An allele whose effect is visible in the heterozygote (mixed) state
A genetic term used to describe how the characteristics expressed by one allele (the dominant one) masks the characteristics expressed by another, known as the recessive allele.
A characteristic that expresses itself wholely or largely to the exclusion of the alternate recessive characteristic. See RECESSIVE.
When on allele's expression in an individual masks the expression of another allele in that individual. Example: people with type A blood can either have two A alleles or one A allele and one O allele. The O allele will not be seen due to the presence of the dominant A allele (see recessive and codominant).
One allele that masks another for a specific trait
in genetics, this is the characteristic of an allele who requires only one copy of a given gene to be expressed. This single copy may come from either parent.
In genetics an allele that completely masks the expression of another allele at the same locus on a homologous chromosome is said to be dominant over the second one.
A condition in which one member of an allele pair is manifested (i.e. determines the phenotype) to the exclusion of the other.
In genetics, referring to that allele of a gene expressed in the phenotype of a heterozygote; the nonexpressed allele is recessive. Also referring to the phenotype associated with a dominant allele. (See Figure 8-1)
An allele whose effect is capable of masking the effect of its allelic (recessive) partner at the same locus (e.g., the allele for melanism in most moths).
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. With a dominant gene, the chance of passing on the gene (and therefore the disease) to children is 50-50 in each pregnancy.
Dominant genes result in certain characteristics in a person, even when the relevant gene is only present in one parent. Dominant genes have a 50-50 chance of being passed on to a child. Autosomal dominant gene requires only one affected parent have the trait to pass it on to offspring.
A mode of inheritance in which only a gene from one parent is required for a trait to appear in an offspring.
A trait which is expressed in individuals who are heterozygous for a particular allele.