- Source: Ancestor
An ancestor, also known as a forefather, fore-elder, or a forebear, is a parent or (recursively) the parent of an antecedent (i.e., a grandparent, great-grandparent, great-great-grandparent and so forth). Ancestor is "any person from whom one is descended. In law, the person from whom an estate has been inherited."
Relationship
Two individuals have a genetic relationship if one is the ancestor of the other or if they share a common ancestor. In evolutionary theory, species which share an evolutionary ancestor are said to be of common descent. However, this concept of ancestry does not apply to some bacteria and other organisms capable of horizontal gene transfer. Some research suggests that the average person has twice as many female ancestors as male ancestors. This might have been due to the past prevalence of polygynous relations and female hypergamy.
Assuming that all of an individual's ancestors are otherwise unrelated to each other, that individual has 2n ancestors in the nth generation before them and a total of 2g+1 − 2 ancestors in the g generations before them. In practice, however, it is clear that most ancestors of humans (and any other species) are multiply related (see pedigree collapse). Consider n = 40: the human species is more than 40 generations old, yet the number 240, approximately 1012 or one trillion, dwarfs the number of humans who have ever lived.
Some cultures confer reverence to ancestors, both living and dead; in contrast, some more youth-oriented cultural contexts display less veneration of elders. In other cultural contexts, ancestor worship or, more accurately, ancestor veneration is when people seek providence from their deceased ancestors.
See also
Citations
External links
United States Census Bureau
Kata Kunci Pencarian:
- Leluhur bersama terakhir universal
- Nenek moyang bersama paling terkini
- Leluhur bersama pertama universal
- Hawa mitokondria
- Tytthostonyx
- Ahmad bin Zaini Dahlan
- Sistem saraf
- Masyarakat majemuk
- Penghormatan orang yang telah meninggal
- Manusia
- Ancestor
- Veneration of the dead
- Last universal common ancestor
- Most recent common ancestor
- Ancestor (disambiguation)
- Lowest common ancestor
- The Ancestor
- The Ancestor's Tale
- Chimpanzee–human last common ancestor
- Ancestor veneration in China
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