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- Why is it more likely that insertions or deletions will be more detrimental to a cell than point mutations?
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- Although it is well known that X-rays cause mutations, they are routinely used to diagnose medical problems, including potential tumors, broken bones, and dental cavities. Why is this done? What precautions need to be taken?Why is a random mutation more likely to be deleterious than beneficial?What type of mutation is shown in the diagram? Why do you think this type of mutation is referred to by this term?
- How can we estimate the age of a mutation?What is the minimal number of insertions/deletions of nucleotides that would result in a frameshift mutation?1) A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors. All BUT ONE of the statements below correctly describes or explains genetic mutations. A) Mutation can disrupt normal cell activity and cause diseases, like cancer. B) Mutations in parents' cells are then passed down to offspring via reproduction. C) Our cells can recognise any potentially mutation-causing damage and repair it before it permanent. D) Mutations can occur as the result of exposure to environmental factors such as smoking, toxins and radiation.