SNPs merely portray parts of their DNA. He or she is for example quick snapshots out-of an enormous photo. It turns out one to particular SNPs come from areas you to alter simpler than many other regions of your own DNA. While they try to choose just the of those you to definitely detect alter – certain variation can be found anywhere between SNPs depending on its area. For this reason quick adaptation, one part of SNPs will get you to definitely cM value unique of various other city, even if the exact same length. This will be based on area and you can chromosome. That segment away from SNPs does not will have an identical cM value due to the fact a segment away from a different town. Like that the fresh new cM thinking could possibly be the constant measurement means used to influence things like anticipating the fresh relative distance.
The result is that should you you will need to set a specific cM for each duration it won’t work. A good thing to do try utilize the cM thinking you are offered as your resource to have comparing between fits.