Genesis chapters 5, 9, 11, 25, 35, 47 and 50 contain the genealogy of the beginnings of the human family. From Adam through Moses, we are told who was related to whom, the age of the father at the birth of their first son and the age of these individuals when they died. In this way, and without using calendar dates, we are told not only who was contemporary with whom but we can learn something about mankind's changing physiology.