Geneticists study genes, heredity, and hereditary transmission. They conduct research on inheritance of genes and how certain characteristics are passed on from one generation to another. They study the origin and transmission of specific inherited traits such as colour of eyes, colour and texture of hair, height, diseases resistance, hereditary diseases, etc. Geneticists need to posses a solid background in sciences like biology, chemistry, physics and mathematics. Their work has application in a variety of fields like academics, medicine, research, agriculture, crime, and industries. Geneticists working in the medical field diagnose hereditary conditions in patients and help them in disease management. They calculate the genetic risk of faulty genes being passed on to potential offsprings, study congenital malformations and conduct mutation analysis. Genetic counselors provide information and advice to families that struggle with hereditary diseases. Agricultural geneticists help in the development of newer varieties of crops that have certain desired characteristics like bigger size of fruits, more nutritive value, seedless fruits, etc. and are more disease resistant than traditional crops. Genetics also has applications in the field of research and development, and university teaching. Read on to discover the life and works of famous geneticists from all over the world through a splendid collection of biographies, timelines and trivia.