Deoxyribonucleic Acid (DNA): A nucleic acid composed of two polynucleotide strands wound around a central axis to form a double helix; the repository of genetic information. Nucleic acid that functions as the physical carrier of inheritance for 99% of all species. The molecule is double-stranded and composed of two strands in an antiparallel and complementary arrangement. The basic unit, the nucleotide, consists of a molecule of deoxyribose sugar, a phosphate group, and one of four nitrogenous bases.

 

Related Words

Deoxyribonucleic Acid (DNA): A nucleic acid composed of two polynucleotide strands wound around a central axis to form a double helix; the repository of genetic information. Nucleic acid that functions as the physical c . . . View Full Definition

Hydrochloric Acid: Stomach acid.

Hydrobromic Acid: Acid liberated during the developing process by the reduction of bromide.

Hydrolyzed Ascorbic Acid: Substance deeply absorbed into skin cells stimulating collagen synthesis, it works as a powerful antioxidant, used in revitalizing skin care products.