The allele whose trait always shows up in the organism when the allele is present is called dominat allele.
The dominant term is related to the genetic transmission of a trait and is represented, in biology, by a capital letter (A, B or V). While recessive, represented by a lowercase letter (a, b or v), they represent genetic traits transmitted only in the absence of the dominant gene.
We say that an allele is dominant when it manages to determine a phenotype, even if it occurs in a single dose. This means that the dominant allele will express itself in both homozygosity and heterozygosity. Dominant allele is expressed in the phenotype, even in a single dose.
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