dna

• DNA is made up of nucleotides, which consist of a sugar molecule (deoxyribose), a phosphate group, and a nitrogenous base (adenine, thymine, cytosine, or guanine).
• Adenine always pairs with thymine through two hydrogen bonds, while cytosine always pairs with guanine through three hydrogen bonds.
• The sequence of bases on one strand determines the sequence of bases on its complementary partner.
• The nitrogenous bases in DNA are adenine, thymine, cytosine, and guanine.
• Each nucleotide consists of a pentose sugar, a phosphate group, and an organic base.
• The sequence of bases on one strand determines the sequence of bases on its complementary strand.
• Nucleic acids have a backbone structure consisting of alternating sugars and phosphates.
• DNA is composed of four different types of monomers called nucleotides.
• Adenine (A) pairs with Thymine (T), while Cytosine (C) pairs with Guanine (G).
• Hydrogen bonding between complementary bases holds the double helix together.
• Each base has a specific pairing rule based on their chemical structure.
• The helix structure is stabilized by base pairs between the nitrogenous bases.
• The two strands of DNA wind around each other like a spiral staircase.