â¢ RECESSIVE ALLELE (noun). The noun RECESSIVE ALLELE has 1 sense: 1. an allele that produces its characteristic phenotype only when its paired allele is identical. Familiarity information: RECESSIVE ALLELE used as a noun is very rare.
Chondroitin is a molecule that occurs naturally in the body. It is a major component of cartilage, the tough, connective tissue that cushions the joints. Commercial chondroitin comes from natural sources, such as shark and bovine cartilage, or synthetic production. Chondroitin helps keep cartilage healthy by absorbing fluid (particularly water) into the connective tissue.
Glucosamine is found naturally in the body's joint cartilage -- helping keep it healthy and lubricated. The shells of shrimp, lobster, and crab provide the basis for these supplements. Glucosamine is believed to help slow deterioration of cartilage, relieve arthritis joint pain, and improve joint mobility. Chondroitin is also found naturally in cartilage and bone.