Not appearing in the phenotype unless both alleles of the organism have the same trait; -- of genetic characteristics, or of the genes coding for such characteristics, in diploid organisms. Opposite of dominant; hemophilia is a recessive trait.

A genetic trait determined by a recessive{2} allele; a trait not appearing in the phenotype unless both chromosomes of the organism have the same allele; also, an allele which is recessive{2}.

A genetic trait that is only expressed if both genes in the pair code for it; it can be "overridden" if the other gene in the pair codes for a dominant trait.

used to describe a gene that produces an effect in an organism only when its matching allele is identical