Final answer:
When we observe genetic markers, we are examining specific variations in DNA sequences that are associated with particular traits or conditions in individuals.
Step-by-step explanation:
Genetic markers are identifiable DNA sequences that show variations among individuals or populations. These variations can be linked to specific traits, diseases, or ancestry. When we "look at" genetic markers, it often involves analyzing the presence or absence of certain genetic variations through techniques like DNA sequencing or genotyping.
This information helps researchers and geneticists understand the genetic basis of various characteristics, predict disease risks, and study population genetics. Essentially, genetic markers serve as signposts on the DNA, providing insights into the genetic diversity and potential predispositions within a population or an individual.