I was trying to tag my fiancee in a picture and as I clicked post, I was directed to a page on Instagram that told me to put in my phone number for a security verify. The only problem is... I don't have a cell phone.
Point mutations in the coding region of DNA can have one of three consequences: 1) No effect if the mutated codon still codes for the same amino acid. 2) It can result in the protein having one different amino acid. The effect on protein function can vary from no effect to devastating diseases such as cycstic fibrosis.
Each person's DNA sequence differs slightly from other people's. DNA sequence can affect gene expression and gene function, and contribute to a person's susceptibility to various diseases. Changes in gene expression can result from changes to the DNA sequence (mutations are one example of changes to DNA sequence).