We are all familiar with the term DNA (DeoxyriboNucleic Acid), but most people probably think of it as an abstract idea that has little to do with daily life. The experiment on the next page may change that view. DNA is all around us. It is found in every plant and animal. You literally eat it at every meal. It is possible to extract pieces of DNA, consisting of billions of basic units (called "bases," abbreviated as A, C, T, and G), with just a common onion and a few household chemicals.
It is amazing what you can hold in your hand. Each DNA strand is an extremely long molecule. While humans have about 3 billion bases in their DNA, the garden onion (Allium cepa) has 15 billion bases. If the DNA in a single human cell were stretched out it would be 6 feet (1.8 m) long, so imagine how long the DNA from an onion cell would be!
DNA is found in every living cell (at least that we know of). It is like a recipe book providing information for building and running the organism. Because each organism needs different information, the arrangement of DNA varies in each individual. Human DNA must contain information to make brains and eyeballs, while plant DNA provides information to make leaves and roots (such as onions).
[Read the rest of the article at Answers in Genesis.]