Assignment: Gregor Mendel
Assignment: Gregor Mendel
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Week 6 discussion Discussion Part One Genetics and Epidemiology Pick one friend or family member and gather their family health history. Pick one possible genetic risk for disease in that person and provide the following: Gender, age Genetic risk for a specific disease Define the disease Evidence to link risk to development Identify if genetics is confounded or linked to any other epidemiological risk factors for disease development that might be modified in this patient. Discussion Part Two Discuss screening tools that might be an option for this person and why or why you would not recommend them at this time. Remember to provide evidence to support your answer. Discussion Part Three Please provide a summary of the case or information you have discussed this week.
Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms.
Though heredity had been observed for millennia, Gregor Mendel, a scientist and Augustinian friar working in the 19th century, was the first to study genetics scientifically. Mendel studied “trait inheritance”, patterns in the way traits are handed down from parents to offspring. He observed that organisms (pea plants) inherit traits by way of discrete “units of inheritance”. This term, still used today, is a somewhat ambiguous definition of what is referred to as a gene.
Trait inheritance and molecular inheritance mechanisms of genes are still primary principles of genetics in the 21st century, but modern genetics has expanded beyond inheritance to studying the function and behavior of genes. Gene structure and function, variation, and distribution are studied within the context of the cell, the organism (e.g. dominance), and within the context of a population. Genetics has given rise to a number of subfields, including molecular genetics, epigenetics and population genetics. Organisms studied within the broad field span the domains of life (archaea, bacteria, and eukarya).
Genetic processes work in combination with an organism’s environment and experiences to influence development and behavior, often referred to as nature versus nurture. The intracellular or extracellular environment of a living cell or organism may switch gene transcription on or off. A classic example is two seeds of genetically identical corn, one placed in a temperate climate and one in an arid climate (lacking sufficient waterfall or rain). While the average height of the two corn stalks may be genetically determined to be equal, the one in the arid climate only grows to half the height of the one in the temperate climate due to lack of water and nutrients in its environment.