For more information on becoming a referee and referee courses you can download our information sheet (see âDocumentsâ at the end of this web page). Also, you can contact John Monk (Email: john.monk@amateur-fa.com Tel: 0208 733 2613) who will be pleased to answer any questions you may have about the course.
Genes are found inside choromosomes Genes are located on chromosomes, which are organized structures of DNA and protein. Chromosomes are found in the nucleus of the cell. Actually, a gene itself is coded for by the base sequence (the adenine-thymine and cytosine-guanine sequence) of a DNA strand.
What is a gene? A gene is the basic physical and functional unit of heredity. Genes, which are made up of DNA, act as instructions to make molecules called proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases. The Human Genome Project has estimated that humans have between 20,000 and 25,000 genes. Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people. Alleles are forms of the same gene with small differences in their sequence of DNA bases.