DNA

COMENIUS EUROPEAN PROJECT

IPSIA “Emilio Cavazza” - POMEZIA

DNA is nucleic acid conteins genetic informations necessary to correct functions of all organisms.

DNA is organic

acid polymers, monomers

called

nucleotides

Nucleotides are formed of three components:Deoxyribose, one nitrogenous base and phosphate group.

There are four types of nitrogenous bases:

• adenine

• cytosine

• thymine

• guanine

The discovery of DNA has beenattributed to the swiss Scientist Friedrich Miescher.

In 1919 he

discovered

nucleotide’s

structure

Biotechnology based on the various changes that can be done on DNA to improve plants and animals, or develop organisms beneficial for man.

Many people think that biotechnology was born recently,but existes already for thousands of years

Traditional biotechnologies• Wine• BeerNew biotechnologies• Antibiotics• Modified animals• Cloning