Frameshift mutations are a genetic mutation, which are caused by the indels of a number of nucleotides in a DNA sequence, which is not divisible by three. With genes being triplet in nature, the insertion or deletion of gene expressions can change the reading frame, resulting in a completely different translation from the original one. The level of mutation and alteration in the protein depends on how early in the sequence the deletion and insertion takes place. In most cases, the polypeptide which is created in the end is either abnormally long or short, which renders it to be non-functional in the end.
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Point mutation is a change that takes place in a particular gene in a very particular place. It is an exchange of the nucleotides which takes place. It usually leads to Adenine being replaced by Thymine, or vice versa. Guanine can also end up being replaced by Cytosine, or the other way round. These exchanges which lead to mutations are what differentiate point mutations from other form of mutations which take place in the nucleotide sequence of a gene.
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