[postlink]https://mickeyfun.blogspot.com/2009/12/cytogenetics-human-chromosomes.html[/postlink]http://www.youtube.com/watch?v=E0WkZr819UUendofvid
[starttext]A chromosome is an organized structure of DNA and protein that is found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences[endtext]
[starttext]A chromosome is an organized structure of DNA and protein that is found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences[endtext]
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