Another stratification system based just as exclusively on ascribed status attributes is characteristic of what are known as age-set societies.
Greater degrees of social stratification appeared in agrarian societies.
Seeds will usually germinate promptly and uniformly after stratification.
Over tens of generations, random mating can eliminate this type of stratification.
By doing so the seed is undergoing a natural form of “cold stratification” or pretreatment.
Use of unlinked genetic markers to detect population stratification in association studies.
The results showed that it was better to start at the top of the stratification system rather than at the bottom.
Archaeological stratification or sequence is the dynamic superimposition of single units of stratigraphy or contexts.
Jade and marble vessels found at the site are seen as items of prestige and clues to the degree of social stratification.
These are a form of internal wave driven by the local tidal flow forcing the stratification against sloping areas of the shelf face.
However, achievement does play a part as well so we cannot limit the definition of social stratification to cases of ascription alone.
It is believed that intercaste marriages weaken the caste system and thus reduce social inequality caused by the caste stratification.