My plan is to develop a tool that predicts mutations in user input genome. I have collected some set of genes and their corresponding sequence. The nucleotide sequence positions of genes are collected from hg19 reference genome. So the idea is when user inputs the sequence data it maps with collected sequence data and detects variation. But my doubts are,
1. How reliable the chromosome location given in hg19 reference genome? Does the given position contains exons, introns and other regions? or it specify only coding region?
2. Basically, what are the algorithms works behind predicting mutations in a genome?
3. Can single change in nucleotide on mapping be considered as mutation? Is there any frequency measures to confirm the mutation?
Answers are expectded in details
Thank you