From the cell to the bases. The chromosome in the nucleus contains the double helix DNA in a form coiled with histone proteins, thus significantly condensed
{{BotMoveToCommons|fr.wikipedia}} {{Information |Description={{fr|Organisation de l'ADN en chromosome<br> [http://www.genome.gov/Pages/Hyperion//DIR/VIP/Glossary/Illustration/chromosome.shtml/ National Human Genome Research (USA)]}} |Source=Transferred f