This is a tutorial based lecture focus to present Genetics and Inheritance. Here also briefly discuss to recall the important terms that relate to genetics and inheritance (KS4) and describe the basic structure of DNA. Here briefly present on how genetic conditions are inherited. Each cell in the body contains 23 pairs of chromosomes. One chromosome from each pair is inherited from your mother and one is inherited from your father. The chromosomes contain the genes you inherit from your parents. There may be different forms of the same gene – called alleles.