Homozygous Dominant. In order to have a trait that is expressed by a recessive gene, such as blue eyes, you must get … The dominant allele is expressed and the recessive allele is masked. Recessive Allele Definition A recessive allele is a variety of genetic code that does not create a phenotype if a dominant allele is present. A person with two recessive alleles is known as homozygous recessive. Recessive allele. Diploid organisms typically have two alleles for a trait. Pronunciation: [ri-ses-iv] [al-leel] Definition. . Two copies of the allele need to be present for the phenotype to be expressed. This means, that in case of a heterozygous gene pair, even if a recessive gene is present, the phenotype would not be affected by it. recessive allele. The recessive allele can express its phenotype only when it is present in the homozygous recessive state. recessive allele, when homozygous, produces the normal phenotype, the dominant allele may be pro-ducing a structural protein incapable of proper func-tion by itself or with the product of the recessive allele. A type of allele that when present on its own will not affect the individual. The recessive allele codes for the recessive trait, it is hidden and not expressed. probability. In a dominant/recessive relationship between two alleles, the recessive allele's effects are masked by the more dramatic effects of the dominant allele.. recessive allele an allele that is expressed only in the homozygous condition Back to glossary index. What is the combination called for - Two Dominant Allele). But dominant allele can express its phenotype in both homozygous dominant and heterozygous states. Recessive Trait Definition. When allele pairs are the same, they are homozygous.When the alleles of a pair are heterozygous, the phenotype of one trait may be dominant and the other recessive. Dominant Alleles vs Recessive Alleles. A recessive trait is a trait that is expressed when an organism has two recessive alleles, or forms of a gene.Traits are characteristics of organisms that can be observed; this includes physical characteristics such as hair and eye color, and also characteristics that may not be readily apparent, e.g. an allele that is masked when a dominant allele is present. recessive allele in a sentence - Use "recessive allele" in a sentence 1. White flowers are caused by a recessive allele in tomato plants. If a recessive allele is inherited together with a dominant allele, only the dominant phenotype will manifest. A recessive allele is the one that cannot express itself phenotypically in the presence of a dominant allele. A recessive allele the type of allele that will only be expressed if both chromosomes contain the same copy of the recessive allele for a particular gene (homozygous recessive). a chart that shows all the possible combinations of alleles that can result from a genetic cross. Thus, this is the summary of the difference between dominant and recessive … You are here: Home / Genomics glossary / Recessive allele. Information and translations of recessive allele in the most comprehensive dictionary definitions resource on the web. A case of the last type where, for structural rea-sons, the abnormal allele acts as … recessive-allele | definition: an allele that produces its characteristic phenotype only when its paired allele is identical | synonyms: allelomorph, recessive, allele Synonym.com is the web's best resource for English synonyms, antonyms, and definitions. Dominant and Recessive Alleles . What does recessive allele mean? 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