A mutation is a type of change that happens in our DNA sequence. Some of the most common mutations are, a duplication where a body part is copied one or more times. Some more common mutations are a deletion where the number of DNA bases are changed, and another common mutation is an insertion where more DNA bases are added. A nucleotide mutation repeats short DNA sequences a number of times in a row. A substitution is where one or more bases in the DNA sequence is replaced by the same number of bases.
There were many short and long term effects after the Chernobyl disaster that would affect plants, animals, and humans. One of the animals that was affected nearby was a mutated catfish in the Pripyat River. The radioactivity from the