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Genealogical data can be
represented in several formats, for example as a ancestry chart. Family trees
are often presented with the oldest generations at the top and the newer
generations at the bottom. An ancestry chart, which is a tree showing the
ancestors of an individual, will more closely resemble a tree in shape, being
wider at the top than the bottom. In some ancestry charts, an individual
appears on the left and his or her ancestors appear to the right. A descendancy
chart, which depicts all the descendants of an individual will be narrowest at
the top.
The longest family tree in the world is the
one of a Chinese philosopher and educator Confucius and he is the descendant of King Tang . The
tree spans more than 80 generations, and includes more than 2 million members.
An international effort involving more than 450 branches around the world was
started in 1998 to retrace and revise this family tree. Now day many companies
make money trying to create a persons family tree, people want to know where
they come from and who are their ancestors. Thats a big reason why many
companies as ancestry.com have had success.
A family tree, or
pedigree chart, is a chart representing family relationships in a conventional
tree structure. The more detailed family trees used in medicine and social work
are known as genograms.
Source:WIKIPEDIA.COM
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