recessive biology definition
In genetics, referring to that allele of a gene that is not express ed in the phenotype when the dominant allele is present. Also refers to the phenotype of an individual (homozygote) carrying two recessive alleles.(Figure 8-1) ... allele: an allele that only has an effect on the phenotype when present in the homozygous state. Codominant alleles: pairs of alleles that both affect the phenotype when present in a heterozygote. Locus: the particular position on homologous chromosomes of a gene.