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A geneticist is a scientist who studies genetics which is the science of genes, heredity, and variation of organisms. Geneticists may do a variety of jobs, in many different fields. There are many careers for geneticists in medicine, wildlife, agriculture, and general sciences. A geneticist may also be employed as a lecturer or researcher.
A geneticist may work in cytogenetics which is the study of the structure and function of cells, especially the chromosomes. A genetic scientist could also work in molecular genetics which is the study of the structure and function of genes at a molecular level. They could also work in population genetics and plant and animal breeding, which is the study of genes on cellular level. This gives rise to one of the most important application fields of genetics, namely the use of genetics to make predictions, which are then used in breeding plants and animals.
Another important field of genetics is human genetics, is the study of genetic diseases in humans. A better knowledge of human genetics and the molecular nature of defective genes make it easier today to successfully diagnose and prevent possible genetically associated diseases.