DNA and histone proteins are packaged into structures called chromosomes. In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes.Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.Chromosomes are not visible in the cellâs nucleusânot even under a microscopeâwhen the cell is not dividing.However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope.hromosomes are not visible in the cellâs nucleusânot even under a microscopeâwhen the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope.
What do people call the imaginary line along the top of the Rocky Mountains? Who was the original singer of Rocky Top?   'Rocky Top' was written by Felice and Boudleaux Bryant and first recorded by the Osborne Brothers in 1967; it was a hit for Lynn Anderson in 1970.
As time evolved it changed to blues which then changed to rock and roll. The earliest rock and roll single is Rocket 88 by Jackie Berenson and the first innovators were Fats Domino, Little Richard and Chuck Berry.