Here's why:
* DNA Structure: DNA is a double helix made up of two strands of nucleotides. Each nucleotide consists of a sugar (deoxyribose), a phosphate group, and one of four nitrogenous bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
* Base Pairing: The two DNA strands are held together by hydrogen bonds between complementary bases: A pairs with T, and G pairs with C.
* Genetic Code: The specific sequence of these bases (A, T, G, C) along a DNA strand forms the genetic code. This code provides instructions for building and maintaining an organism.
* Genes: Genes are segments of DNA that contain the code for specific proteins. The sequence of nucleotides within a gene determines the sequence of amino acids in the protein.
In summary, the order of the nucleotides in a DNA molecule determines the sequence of amino acids in proteins, which in turn determines the traits of an organism.
