Scientific Fact versus Interpretation

So if millions of experiments show identity by descent (which is what a forensic test is based on) and why you are admitting..why again is the creationist "interpretation" of the data that different populations composed of individuals who pass on genetic traits the same way, species which pass on traits the same way etc. are not showing identity by descent? Why in the case of forensics do you make an exception to your rule about us evil scientists and our propaganda? Seems you should be campainging to stop the use of DNA based forensic evidence in criminal cases if you wish to remain consistent.