The author explains that researchers who study the ancestry of Polynesians look at DNA on the Y chromosome. Which detail from the selection explains why?
A. Everyone gets their mitochondria from their biological mother.
B. The Y chromosome changes much less than other chromosomes.
C. Men who have daughters only or no children would not pass on their Y chromosome.
D. We are all descended from one small ancestral population in Africa.
The author explains that researchers who study the ancestry of Polynesians look at DNA on the Y chromosome. Which detail from the selection explains why?
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The correct answer is B. The Y chromosome changes much less than other chromosomes.
Explanation: Researchers study the Y chromosome because it is passed down from father to son with relatively few changes over generations. This stability allows scientists to trace paternal lineages more accurately, making it a valuable tool in understanding the ancestry of populations, such as the Polynesians.