What are three things that can cause mutations?
Mutations Occur Spontaneously and Can Be Induced Natural exposure of an organism to certain environmental factors, such as ultraviolet light and chemical carcinogens (e.g., aflatoxin B1), also can cause mutations..
What are the causes and effects of mutation?
Mutations can also be caused by exposure to specific chemicals or radiation. These agents cause the DNA to break down. This is not necessarily unnatural — even in the most isolated and pristine environments, DNA breaks down. Nevertheless, when the cell repairs the DNA, it might not do a perfect job of the repair.
What problems can mutations cause?
Some mutations may cause a gene to be turned on, and make more of the protein than usual. Some mutations don’t have a noticeable effect, but others may lead to a disease. For example, a certain mutation in the gene for hemoglobin causes the disease sickle cell anemia.
What are the 4 types of mutation?
There are three types of DNA Mutations: base substitutions, deletions and insertions.Base Substitutions. Single base substitutions are called point mutations, recall the point mutation Glu —–> Val which causes sickle-cell disease.Deletions. … Insertions.
What is mutation and examples?
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 such as UV light and cigarette smoke. Over a lifetime our DNA? can undergo changes or ‘mutations?’ in the sequence of bases?, A, C, G and T.