nuclic acid

Nucleic acids are molecules that store information for cellular growth and reproduction
There are two types of nucleic acids:
- deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)
These are polymers consisting of long chains of monomers called nucleotides
A nucleotide consists of a nitrogenous base, a pentose sugar and a phosphate
Nucleic acids are molecules that store information for cellular growth and reproduction
There are two types of nucleic acids:
- deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)
These are polymers consisting of long chains of monomers called nucleotides
A nucleotide consists of a nitrogenous base, a pentose sugar and a phosphate group:
1869: isolated DNA from salmon sperm (Friedrich Miescher)
1944: proved DNA is genetic materials
1953: discovered DNA double helix (Watson and Crick)
1968: decoded the genetic codes (Nirenberg)
1981: invented DNA sequencing method (Gilbert and Sanger)
1987: launched the human genome project
2001: accomplished the draft map of human genom (Avery et al.) e
The nitrogen bases in nucleotides consist of two general types:
- purines: adenine (A) and guanine (G)
- pyrimidines