Joseph Vissarionovich Stalin was a Soviet revolutionary and political leader of Georgian ethnicity. Governing the Soviet Union as its dictator from the mid-1920s until his death in 1953, he served as General Secretary of the Central Committee of the Communist Party of the Soviet Union from 1922 to 1952 and as Premier of the Soviet Union from 1941 to 1953. Ideologically a Marxist and a Leninist, Stalin helped to formalise these ideas as MarxismâLeninism while his own policies became known ...
DNA is extracted from human cells for a variety of reasons. With a pure sample of DNA you can test a newborn for a genetic disease, analyze forensic evidence, or study a gene involved in cancer. Try this virtual laboratory to perform a cheek swab and extract DNA from human cells. Javascript is required to view this content.
A typical human cell has enough âDNA to wrap around the cell more than 15,000 timesâ (531). Therefore, DNA packaging is crucial because it makes sure that those excessive DNA are able to fit nicely in a cell that is many times smaller. The DNA in bacterial cells are either circular or linear.