Can environmental factors affect the development of an organism that carries a lethal mutation?

Yes. Mutations that occur in somatic cells of the body cause premature aging, shorten lifespan, and, depending on the place of occurrence, affect certain vital functions of the body. Somatic mutations pose a very serious threat to public health, as this is the first step to the formation of malignant tumors. The vast majority of all cases of breast cancer are the result of somatic mutations. Under the influence of mutagens, the number of changes in hereditary material increases sharply. After the accident at the Chernobyl nuclear power plant (1986) as a result of radiation exposure, the incidence of thyroid cancer in the Gomel region increased by 20 times. Excessive ultraviolet radiation increases the risk of skin cancer.

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