Deoxyribonucleic acid

5/17/2010

Deoxyribonucleic acid | JUAN CARLOS MESTRE |

INSTITUTO PIERRE FAURE | DNA |

Hypothesis:
Does DNA have information about us?
Objective:
To Know how we can find DNA and whyit’s so important
Everyone has listened at least once in his/her life about DNA. It is mentioned everywhere, such as in movies or TV programs.
We can know it exists and listen about it, but what’sexactly the DNA? I hope that with this project I can know and understand what were the movies and programs really talking about. I hope I can enjoy it and learn a lot through the creation of thisproject.

DNA
What does DNA means?
Deoxyribonucleic acid.
It is responsible for determining how a person looks. It’s a nucleic acid that contains genetic instructions.
DNA is found in all livingorganisms and it supplies the necessary information for cells to reproduce. DNA is compared to a code; it contains the instructions needed to construct other cells. It often contains codes for geneticdiseases that are passed from parent to child. The DNA segments are called genes.

Chemical structure of DNA
Chemically, DNA is formed by two large polymers called nucleotides, with backbones madeof sugars and phosphates groups joined by ester bond. These two roll in opposite directions to each other and are therefore anti-parallel. Attached to each sugar is one of four bases. It’s thesequence of the 4 bases that have the encode information. In a transcription process the code is read by copying stretches of DNA into the related nucleic acid RNA.
DNA is organized into extendedstructures named chromosomes. These are duplicated before cells divide, in a process named DNA replication. Eukaryotic organisms (animals, plants, fungi, and protists) store most of their DNA inside the cellnucleus.
Process of DNA replication.


Importance of DNA
According to this page http://www.ehow.com/about_4567655_importance-dna.html
“DNA has the information that it’s needed to construct...