Here's how it works:
* Genes: DNA is organized into units called genes. Each gene contains the code for a specific protein.
* Nucleotides: DNA is made up of building blocks called nucleotides. Each nucleotide has a sugar, a phosphate group, and one of four nitrogenous bases: adenine (A), thymine (T), guanine (G), and cytosine (C).
* Genetic Code: The sequence of these bases within a gene forms the genetic code. This code is read in groups of three bases called codons. Each codon corresponds to a specific amino acid.
* Transcription and Translation: During transcription, the DNA sequence of a gene is copied into a messenger RNA (mRNA) molecule. This mRNA molecule then travels to the ribosomes in the cytoplasm, where the genetic code is translated into a chain of amino acids.
* Protein Synthesis: Ribosomes read the mRNA codons and use them to bring the appropriate amino acids together, linking them into a polypeptide chain. This chain folds into a three-dimensional structure, forming a functional protein.
Therefore, DNA serves as the blueprint for protein synthesis, providing the instructions for arranging amino acids in the correct order to create specific proteins.
