The researchers used strands of DNA located at the ends of chromosomes (called telomeres) to classify the cells they studied. What assumption did they make about telomeres?
A) Shorter telomeres indicate younger cells.
B) Longer telomeres indicate younger cells.
C) Telomere length is not an accurate indicator of cell age.
D) Longer telomeres indicate that the person from whom the cells came does not exercise.
Answer: B