Genes are the basic physical and functional unit of heredity. They are made up of DNA and act as instructions to make molecules called proteins. These proteins perform various functions in the body and determine the traits of an organism.
Genes are composed of DNA, which is a long molecule made up of a sequence of nucleotides. The sequence of nucleotides in a gene determines the specific instructions for making a particular protein.
Genes carry the information needed to build and maintain cells and pass genetic traits to offspring. They are responsible for determining many of our physical traits, such as eye color, height, and susceptibility to certain diseases.
By understanding the structure and function of genes, we can gain insights into the hereditary aspects of biology and the mechanisms of genetic inheritance.