What is a gene?

Gene is the smallest part inside the DNA and it carries characteristics of the living being. A gene is the fundamental unit of heredity in an organism. It is a segment of DNA that contains instructions for making a specific protein or RNA molecule. These instructions are passed down from parents to their offspring, influencing their traits and characteristics.

Key points about genes:

  • DNA: Genes are made up of deoxyribonucleic acid (DNA), a complex molecule that stores genetic information.
  • Proteins: Many genes code for proteins, which are essential for various functions in the body, such as building tissues, enzymes, and hormones.  
  • RNA: Some genes code for RNA molecules, which can have different functions, including carrying genetic information to ribosomes for protein synthesis.  
  • Traits: Genes determine traits like eye color, hair color, height, and susceptibility to certain diseases.  
  • Mutations: Changes in the DNA sequence of a gene can lead to mutations, which can affect the function of the protein or RNA it produces.

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