It depends on your definition of “ancient.” Radiometric dating using Carbon-14 can reliably date back to about 50,000 years, uranium-lead or lead-lead dating can date back multiple millions, potassium-argon dating can reach 1.5 billion, and rubidium-strontium can reach 50 billion (nearly 4x the age of the universe). It depends on the context in which this question is being asked.
Y-STR analysis. It is a DNA test used to compute and match with the possibility via lap.
We have 
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Thus we can convert the units of the given quantity.
That is,
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The quantity is converted to the required units.
