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The ABCs of DNA — Chromosomes

The ABCs of DNA — Chromosomes

  What is a Chromosome?   When the very long polymeric molecule of DNA is wound around a protein called a histone into a thread like strand, it is called a chromosome. The histone not only supports the DNA strand, but on occasion it can control DNA expression by folding the DNA over a particular gene, physically blocking access to the gene and preventing it from being ‘read’ or transcribed.The DNA of eukaryotes and archae exists as chromosomes. Not … Read entire article »

Filed under: The Basics