One of a pair of alleles that is expressed and that suppresses the expression of the other member of the pair when both are present.
An allele with a phenotype that is expressed whether the allele is heterozygous or homozygous.
The form of the gene that is fully expressed in the phenotype. Written with an upper case letter, such as BB or Bb
An allele that masks an alternative allele when both are present (in heterozygous form) in an organisms (see recessive).
a copy of a gene that exhibits an effect regardless of whether it is in one copy or two
an allele that determines the phenotype in a heterozygous condition
A particular version of a gene that is always expressed, no matter what other copy of the gene is possessed by the organism. An example of a dominant allele is the allele for yellow-coloured plumage in Birds.
An allele which is expressed when only one copy is present in an individual, i.e., in heterozygous condition.
Phenotype seen in offspring whether or not the recessive allele is inherited by the offspring.
one that determines the phenotype even when there is only one copy (i.e. in a heterozygous individual)
A particular version of a gene that is always expressed, no matter what other copy of the gene is possessed by the organism. An example of a dominant allele is the allele for black-colored hair in cattle (see page on coloration).
An allele that expresses it's phenotype even when heterozygous with a recessive allele.
The allele that takes precedence over the recessive allele, and therefore shows itself in the population much more regularly.
In a heterozygote, the allele that is fully expressed in the phenotype.
a gene that is expressed, regardless of whether its counterpart allele on the other chromosome is dominant or recessive. Autosomal dominant disorders are produced by a single mutated dominant allele, even though its corresponding allele is normal. (See Recessive allele.)
Aform or mutation of a gene that will produce a trait or disease if a copy is inherited from just one parent. E - F
One member of a gene pair that occupies a particular site on homologous chromosomes that is expressed in the heterozygous state.
An allele that expresses its phenotypic effect even when heterozygous with a recessive allele; thus if is a dominant over , then / and / have the same phenotype.
an allele which will be expressed in (i.e. affect the phenotype of) an organism, regardless of the characteristics of its counterpart allele. For example, the allele for brown eyes is dominant over the allele for blue eyes, so a person inheriting a "blue-eye" allele from one parent and a "brown-eye" allele from the other will almost always have brown eyes. See gene expression and compare recessive allele.
Allele whose characteristics are reflected in the phenotype even when part of a heterozygous genotype. Its genetic characteristics tend to mask the characteristics of other alleles.
In genetics, dominant trait refers to a genetic feature that hides the recessive trait. A dominant trait causes a phenotype that is seen in a heterozygous genotype. Many traits are determined by pairs of complementary genes, each inherited from a single parent.