Cell mutation could be a possible option
The group that shows the effect of the variable being tested is called the experimental group. The variable <span>in the experimental group is exposed to experimental changes and influences the results, which means that is not isolated as in the contro</span>l group. All experiments have an experimental group, but not all experiments need to have control group.
Blood is an amalgamation of various chemicals, so it would be not practical to test for each one of them. Thus, the majority of the tests for blood are actually testing for a solitary component, that is, heme, as blood comprises of an ample amount of heme and so it is comparatively easy to determine.
However, the plant peroxidases also comprise heme, thus, the blood test, which is actually a heme test, will come positive. This leads to an outcome known as false positive. Thus, in the case of forensics, one has to depend on other things also to prove the suspect's guilt or innocence.