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) We are all descended from one small ancestral population in Africa.
C) The Y chromosome changes much less than other chromosomes.
D) Men who have daughters only or no children would not pass on their Y chromosome.
The correct answer is C) The Y chromosome changes much less than other chromosomes.
Explanation: Researchers focus on the Y chromosome because it is passed down from father to son and tends to remain relatively stable over generations, making it a useful tool for tracing paternal lineage and ancestry. Its slower rate of change means that variations can indicate clearer paths of ancestry, especially in populations like the Polynesians.