Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. The first allele is dominant and the second allele is recessive.
Thereof, what is dominant allele and recessive allele?
The terms dominant and recessive describe the inheritance patterns of certain traits. For a recessive allele to produce a recessive phenotype, the individual must have two copies, one from each parent. An individual with one dominant and one recessive allele for a gene will have the dominant phenotype.
What is the definition of dominant and recessive?
(In genetic terms, a dominant trait is one that is phenotypically expressed in heterozygotes). A dominant trait is opposed to a recessive trait which is expressed only when two copies of the gene are present.
What does dominant and recessive mean in biology?
Dominant. From Biology-Online Dictionary. Definition. (genetics) (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. (genetics) (Of, or pertaining to) An organism that expresses the dominant gene (or allele)