B2 DNA

Subdecks (1)

Cards (14)

  • The structure of DNA consists of two strands twisted around each other, forming a double helix.
  • DNA is a polymer of nucleotides, each of which is a deoxyribose sugar, a phosphate group and a nitrogenous base
  • RNA is a polymer of nucleotides, each of which is a ribose sugar, a phosphate group and a nitrogenous base
  • There are four different types of bases found in DNA: adenine, guanine, cytosine and thymine
  • There are four different types of bases found in RNA: adenine, guanine, cytosine and uracil
  • Guanine always pairs with cytosine
  • Adenine always pairs with thymine or uracil
  • The base sequence is universal and is the same in all organisms.
  • The base sequence is non-overlapping and each base is only read once.
  • The base sequence is degenerate, meaning that different base sequences can code for the same amino acids
  • One amino acid is coded for by three DNA base(one triplet). This is know as a codon.
  • There are 2 stop codons. These do not code for amino acids.
  • The two DNA strands are antiparallel, meaning they are in opposite directions.