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 sulfate is a chemical compound found in the fluid around joints. It can also be taken from natural sources such as seashells, or it can be made in the laboratory. Don't confuse glucosamine sulfate with other forms such as glucosamine hydrochloride or N-acetyl-glucosamine.