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DNA Trivia

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  • Can a person have two different sets of DNA?
    Yes — this rare condition is called chimerism.
  • What does DNA stand for?
    DNA stands for deoxyribonucleic acid.
  • Can your DNA reveal what you smell like?
    Partly — genes influence body odour.
  • Which is longer: all the DNA in your body or the distance to the Sun?
    Your DNA — it could reach the Sun and back many times.
  • Approximately what percentage of human DNA is the same in all people?
    About 99.9%.
  • Is DNA the same in every cell of your body?
    Mostly yes, but some cells (like red blood cells) are different.
  • True or false: your DNA can change during your lifetime.
    True — small mutations can happen.
  • Is DNA testing 100% accurate?
    No — results are probabilistic.
  • Can DNA survive being frozen for thousands of years?
    Yes — that’s how we study ancient humans.
  • Which part of the body is most often used for DNA tests?
    Saliva or cells from inside the cheek.
  • How old is the oldest DNA scientists have successfully studied?
    Over 2 million years old.
  • Can stress affect your DNA?
    Yes — it can influence how genes are switched on or off.
  • True or false: humans share some DNA with bananas.
    True — about 60%.
  • Can animals be cloned using DNA nowadays?
    Yes — for example, sheep, dogs, and cats.
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