Chester William Nimitz, Sr. was a fleet admiral of the United States Navy. He played a major role in the naval history of World War II as Commander in Chief, U.S. Pacific Fleet and Commander in Chief, Pacific Ocean Areas, commanding Allied air, land, and sea forces during World War II.
The DNA molecules is packaged into thread-like structures called chromosomes.Each chromosomes is made up of DNA tightly coiled many times around proteins called histones.