Legal significance of biological material evidence

To put it simply: biological material evidence refers to a kind of material evidence that can obtain the characteristics of corresponding biological individuals or groups through certain processing methods, and this kind of material evidence is basically from biology. (It is purely a personal summary, not a book definition. If you have the ability, I hope you can find relevant information for calibration yourself. )

One of the characteristics of this kind of material evidence is that they all contain substances that can identify specific individuals or groups.

One of them can be summarized as: from the human body. Such as hair, dander, blood, semen, secretion, excrement and some other tissues. Because these things all contain the genetic material of the corresponding individual, and the individual genes of human beings are basically non-repetitive, these "things" can be used as legal evidence.

Of course, there are other things, such as the identification of insects, pollen, algae, fungi and so on. , can also be used as the corresponding evidence to help solve or close the case.

At the same time, there are some "physical evidence" that do not come directly from biology, and the most common one is tooth marks. Although it does not directly come from biological individuals, it can also be called "biological material evidence" because it contains information that can distinguish and identify specific individuals.