If the two different genes include one dominant allele and one recessive allele, which is the heterozygous genotype, the dominant phenotype is expressed. For example, if R represents the red flower allele and r represents the white flower allele, the flowers would be red. If the trait is governed by incomplete dominance, then the heterozygous genotype (Rr) will produce an intermediate phenotype, such as pink.
a trait is expressed when two different genes for the same trait are present
A dominant trait is expressed when two different genes for the same trait are present.
Dominant trait
Dominant.
polygenic
Traits that typically will only be expressed in offspring if they inherit two copies of the genes for the trait are called Recessive traits. - Nikkkki
It depends on the gene in question, and the type of dominance of the trait.For monogenetic traits (those controlled by a single gene), the dominant trait(s) will be expressed when two different alleles are present.For example, if B leads to black fur and b leads to white fur:Complete dominance would result in a rabbit with Bb having black fur.Incomplete dominance - Bb would result in grey furCodominance - Bb would result in black and white patches/spots/etc.
Alleles are different forms for a trait
If the gene is governed by a dominant and recessive allele, then if the dominant allele is present, the dominant trait will be expressed. If both alleles are recessive, then the recessive trait will be expressed.
A dominant trait is expressed when two different genes for the same trait are present.
dominant
A trait that is not expressed when another is present is referred to as a recessive trait.
epistasis
recessive trait
Recessive, as in recessive genes, refers to an inherited characteristic or trait that is expressed only when two copies of the gene responsible for it are present.
dominant
recessive
recessive
polygenic
polygenic
epistasis