In the Chinese calendar, the days begin at midnight and end at the next midnight, but people tend to regard the days as beginning at dawn. Currently, the time in days are scaled with hour-minute-second system. In ancient China, the time is divided according to either the shi-shÃ­ ke kÃ¨-and gÄng. diÇn systems
maternal lineage, or 2) Y-chromosome DNA which is inherited through the fatherâs line and is. passed down only to males in each generation and can give information only to males about his. paternal lineage. The other type of genetic ancestry test is one that makes estimates of a personâs ancestry by.
Y-DNA STR testing chart. From ISOGG Wiki. This Y-STR testing chart provides comparative information on the Y-STR Y chromosome DNA tests offered by the major DNA testing companies. Y-STR tests are used for genetic genealogy within a genealogical timeframe and are generally co-ordinated through surname DNA projects.Some surname DNA projects offer sponsored Y-DNA tests. To see if your name is included on the list visit our free DNA tests page.-STR tests are used for genetic genealogy within a genealogical timeframe and are generally co-ordinated through surname DNA projects. Some surname DNA projects offer sponsored Y-DNA tests. To see if your name is included on the list visit our free DNA tests page.