Chapter 637: Mixed-Race

Different races have different physical characteristics; before the winds of political correctness blew, this was considered absolutely correct knowledge.

A very typical example is the "Carabelli tubercle," which refers to the enamel tubercle commonly found near the cervical area of the lingual surface of the first molar in Caucasians. The Carabelli tubercle is actually a supernumerary cusp of the molar; some Caucasians also have it distributed on their second and third molars, but it is extremely rare in people of color.

The unique tooth shape of the Mongoloid race is the shovel-shaped incisor, which appears with a 90% probability. Similarly, the probability of this tooth shape appearing in Caucasians and Negroids is extremely low.

Many people run to hospitals to grind their bones, undergo zygomatic reduction surgery, and so on; in fact, they are just trying to make their facial features appear different through changes in the bone.

The so-called "high-class face" with wide eye spacing, high cheekbones, a slightly square chin, prominent brow ridges, etc., are all manifested from the bone structure.

It was only after Jiang Yuan mastered Level 3 Skull Reconstruction that he gained some insight into this aspect. After all, the coverage of this skill is not limited to the domestic sphere; many countries internationally, especially immigrant countries like the United States, must study the racial characteristics between different races and mixed-race individuals, whether voluntarily or passively.

In contrast, even if domestic forensic experts have studied racial characteristics, they rarely involve the characteristics of mixed-race individuals. Even forensic experts in the capital, such as the veteran comrade Zeng Lianrong, are only half-knowledgeable and quite ignorant about it.

"Mixed-race, what kind of mixed-race?" Zeng Lianrong couldn't help but ask out of curiosity first.

"Asian-European mixed, I suppose." Jiang Yuan could only give a rough estimate.

However, a rough estimate also greatly narrowed the scope, which could be called a major breakthrough. There are many foreigners in the capital, and many mixed-race individuals, but if one only counts Asian-European mixed-race individuals, the total number is definitely not large. Most importantly, the police don't need to find all Asian-European mixed-race individuals; they only need to find the missing persons.

As for those whose families haven't reported them missing, the problem is even bigger; if no corresponding match can be found among the missing persons, this itself is actually another clue.

No matter how calm and composed Zeng Lianrong was, he couldn't delay at this moment. He first took off his gloves, then changed into new ones, and asked, "Forensic Expert Jiang, please trouble yourself to explain."

He considered himself responsible for this autopsy and conclusion, and with a major breakthrough, he had to report it as soon as possible. But before that, he had to confirm that Jiang Yuan's judgment was correct, or at least, that it had a certain rationality.

Zeng Lianrong couldn't help but feel a bit strange. On ordinary days, he wouldn't have such problems. If his subordinates discovered some details or had some decisive evidence, Zeng Lianrong would just need to take a look to know if their judgment was right, whether it was indeed the case or if there was some bias.

But today's situation was completely different. He was okay with mixed-race, and he was also okay with forensic anthropology, but was forensic anthropology of mixed-race individuals beyond his expertise?

However, Jiang Yuan was too familiar with Zeng Lianrong's problem; he had encountered it I don't know how many times.

Jiang Yuan turned around.

He put on a smile that convinced all living things and said, "There are many ways to judge. I use the skull as the main basis, mainly these three points: the canine fossa, the zygomatic tubercle, and the bulging of the lateral part of the piriform aperture."

The three locations Jiang Yuan mentioned were basically on the front of the face, and they were all standard academic terms.

Zeng Lianrong was stunned. He quickly entered his role, picked up the skull on the autopsy table, and while looking at it, said, "If I remember correctly, these three locations are all non-metric traits."

Jiang Yuan nodded and said, "That's right, but there are also some indicators that can be used, or just using them like this is fine."

So-called non-metric traits are described through anthropological observation and are also an important means of anthropological research. Simply put, it's done by looking. It is qualitative rather than quantitative.

This is actually very easy to understand. Any person doesn't need to accept any theoretical knowledge or anthropological explanation; if you put a Caucasian and a Mongoloid in front of them, it is very easy to distinguish the differences between the two.

In fact, if the person is still alive, if a mixed-race child stands in front of an ordinary person, not to mention being able to distinguish them without a doubt, there is still a high possibility.

Of course, the significance of this assumption is not great. This is like judging gender through the pelvis.

If the person is still alive, this thing shouldn't be a topic at all; there are plenty of masses who can make more detailed classifications.

However, in the final analysis, it is all work that makes perfect through practice.

Zeng Lianrong frowned and said, "If it's non-metric traits, how is the accuracy? I mean, how was the mixed-race determined from this?" ===== CHAPTER 638 =====