What does «ancestro» mean in Spanish?
- Parent or (recursively) the parent of an ancestor (i.e., a grandparent, great-grandparent, great-great-grandparent, and so on). In other words, it is any person from whom one is descended. Two individuals are genetically related if one is the ancestor of the other or if they share a common ancestor. In evolutionary theory, species that share an evolutionary ancestor are said to be of common ancestry. 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 could be due to the past prevalence of polygynous relationships and female hypergamy. Assuming that all ancestors of an individual are unrelated to each other, that individual has 2n ancestors in the nth generation before him and a total of 2g+1 - 2 ancestors in the g generations before him. In practice, however, it is clear that most ancestors of humans (and any other species) are related to each other in multiple ways.