2006-12-26 22:11:15 · 3 answers · asked by Yawny 1 in Science & Mathematics ➔ Biology
The SNP is becoming more and more accepted as a tool for molecular markers. It's easy to develop a marker based on a single nucleotide polymorphism, technology is catching up so literally thousands can be tested at a time. More and more genetic tests are being developed that rely on SNPs.
SNPs are very important in this area.
2006-12-27 00:58:09 · answer #1 · answered by btpage0630 5 · 0⤊ 0⤋
SNP (single nucleotide polymorphism) is a change in just 1 nucleotide base at a location. Its implicated in some diseases and accounts for variation and hence aids evolution; but of late, its been discovered that differences among humans is accounted for by a large extent by extended sequence changes, not just SNPs.
2006-12-26 22:18:37 · answer #2 · answered by Venkat 3 · 0⤊ 0⤋
Simple mutations in genes can have profound implications. For example, a mutation of the valine 717 residue in the protein APP to one of 4 other amino acids (I,F,G,L) results in Early-onset Alzheimer's Disease. In one extreme case, a patient developed Early-onset Alzheimer's at the age of 29, as opposed to the normal development of Alzheimer's after the age of 65.
2006-12-27 00:36:42 · answer #3 · answered by leprechaun 2 · 0⤊ 0⤋