If Genetics testing finds DNA Mutations, Would it find Spontaneous DNA Mutations? If so, then shouldn’t people be Genetically tested throughout their life?

Question

Say you’ve gone through Radiation treatments, which is known to create DNA mutations, or you’ve smoked for several years also known to create mutations, Wouldn’t a Genetics test pick that up?

In: 5

Answer 1

Spontaneous Genetic mutations in adults don’t enter the gene pool unless it’s a mutation to a reproductive cell and that results in a baby. One cell mutated in an adult only matters if it turns cancerous, which is something medicine does test for. But testing for one cell’s mutation would be almost impossible… your body has billions of cells, and finding that one would be very very improbable, and most of those cells would most likely not effect the overall body anyway.