In various textbooks, including Watson's book on DNA, the central dogma describes a flow of information from DNA to RNA to protein. Crick calls this the sequence hypothesis. Watson's definition seems to have taken hold in most textbooks today.
You need to be at least 15 years old work mcdonald's, though the age requirements vary depending on position. Startwiremcdonald's job applications, organization blog.
You need to be at least 16 years old to work in the front of the restaurant and if you want to work with the food or in the back of the restaurant then you have to be 18 years old because of federal standards.