Question 1

True or false: You can extract DNA from a strawberry using household dish soap and rubbing alcohol.

Accepted Answer

True. Soap breaks cell membranes, and alcohol precipitates the DNA so it becomes visible as a white, stringy substance. A classic science experiment.

Question 2

True or false: Eating a genetically modified banana will alter your own DNA.

Accepted Answer

False. DNA from food is broken down during digestion. GMOs are safe and do not change your genetic code—this is a persistent myth.

Question 3

True or false: If all the DNA in your body were stretched end-to-end, it would reach from Earth to the Sun and back about 70 times.

Accepted Answer

True. Each human cell contains about 2 meters of DNA. With roughly 30 trillion cells, total DNA length is ~2×10^13 meters, equal to ~70 Earth–Sun round trips.

Question 4

True or false: Bananas have more genes than humans.

Accepted Answer

True. The banana genome contains around 36,000 genes, while the human genome has about 20,000-25,000 protein-coding genes.

Question 5

True or false: Human DNA is 99.9% identical, but the 0.1% difference contains 3 million variations.

Accepted Answer

True. That tiny fraction accounts for all genetic diversity, including appearance, disease risk, and traits. It's enough to make each person unique.

Question 6

True or false: Identical twins have exactly the same DNA sequence throughout their entire lives.

Accepted Answer

False. They start with nearly identical DNA, but over time they accumulate different mutations and epigenetic changes, making them genetically distinct.

Question 7

True or false: Only about 2% of human DNA actually codes for proteins; the rest is 'junk DNA' with no function.

Accepted Answer

False. While only ~2% codes for proteins, the rest is now known to regulate gene activity, maintain chromosome structure, and more—far from junk.

Question 8

True or false: Neanderthal DNA makes up about 20% of the genome in people of European and Asian descent.

Accepted Answer

False. Actually, it's about 1-2%. The 20% figure is a common myth; some individuals carry a bit more, but not that high.

DNA Trivia Questions