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Scientists Use Mitochondrial DNA to Track the Migration of Humans

question 29

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Scientists use mitochondrial DNA to track the migration of humans across the planet.After a group migrates away from their ancestral homeland,any mutations that occur are not mixed with those left in the ancestral population.Based on this,mitochondrial DNA samples taken from ____ would have the fewest unique mutations,representing the original and oldest DNA sequences.


Definitions:

Assembly Department

A segment of a manufacturing site dedicated to constructing end products from various components.

Predetermined Overhead Rate

A rate calculated before a period begins, used to allocate manufacturing overhead costs to products based on a certain activity base, such as labor hours or machine hours.

Direct Labor-Hours

The total hours worked directly on a specific task or project by employees who are considered part of the production process.

Machine-Hours

A measure of the amount of time a machine is operated, used in calculating manufacturing costs and activity bases.

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