Certification vs. Licensing. Some biologists are certified. Your friends may use the terms interchangeably, but a certification is not the same thing as a license. Many professional occupations in the U.S. require a license from a state regulatory board.
The genogram is a pictorial graph of the structure and characteristics of a family across three or more. generations. The genogram will not replace traditional Pedigree Charts and Family Group Records for use. in genealogical research, but it can provide a way to look beneath the surface of names, dates, and places so.
A cladogram is a diagram used in cladistics which shows relations among organisms. A cladogram is not however an evolutionary tree; many evolutionary trees can be inferred from a single cladogram. A cladogram uses lines that branch off in different directions ending at groups of organisms. There are many shapes of cladograms but they all have lines that branch off from other lines.