How many chains make up DNA? A) One B) Two C) Three D) Four

DNA is composed of two intertwined chains that form a double helix structure. This clever design allows for its stability and the ability to replicate itself during cell division. Each chain, made up of nucleotide building blocks, runs in opposite directions, which is known as antiparallel orientation, allowing for complementary base pairing. In real-world applications, understanding the double-stranded nature of DNA is crucial for genetics and biology. This structure aids in various techniques such as PCR (Polymerase Chain Reaction), gene cloning, and even forensic science where DNA evidence can be analyzed. Getting a grasp on how these two chains interact can open a whole new world of scientific exploration!