In most multicellular organisms, every cell carries the same DNA, but this genetic information is used in varying ways by different types of cells. In other words, what a cell does within an organism dictates which of its genes are expressed.
Most enlisted positions require four years of active duty. If you join the Navy through an officer program, you must serve at least four of your eight years on active duty. However, pilots and flight officers must serve a minimum of eight to 10 years of active duty. Dentists, Medical Service Corps officers and nurses must serve a minimum of three years of active duty.
Â· just now. 1  The most common is 4 years but you can enlist for anywhere from 2-8 and even 10 now with and active/national guard enlistment. 2  3 years. 3  It is an 8 year committment. 4  Technically, 6 months to 2 years reckoning on the dept. 6 months for the army. 5  2-6 years. 6  3 years 18 months just enlisted last monday. 3 years. my hubby was in the army for 4 but got stop lossed so he got out about 9 months after his term ended. 8 years total. Your active service is based on the amount of years you have signed up for. The rest of the time will be spent in Inactive ready reserve.