Chapter 338

After Qingming Festival, Qin Ying came to Benzhou city to find Fang Nan.

Check the missing Fang Nan at the police station, and you can find Fang Nan's address at once. Qin Ying's heart is very happy, her body is getting better and better day by day, the wound has not hurt much, these are good news, let her mood is particularly bright.

Qin Ying is calm in her work. When she comes to Fang Nan's home, she sees Fang Nan's parents and identifies each other. This is a middle-aged couple in their fifties. They both work in the unit. The woman is a bank teller, and the man is a driver in the sanitation department.

It can't be seen from their faces that they are similar to the girls in the 27th dormitory. The fangs are all middle-class. The men are not handsome enough, and the women are not tall and charming enough. Although they are very old, they can also guess from their faces what they looked like when they were young.

This kind of appearance is far away from the girls of 27su. The girls selected by Jiuyou old monster are very beautiful. It's impossible to choose a girl of medium beauty to go to bed with him.

Qin Ying couldn't see who the fangs looked like, so she had to take their DNA samples, which was no problem for Qin Ying, who was quick, as long as she passed by the couple.

The result of the DNA comparison surprised Qin Ying, because there was no one on the right number with the 27 night girl.

Why?

Qin Ying's forehead exudes cold sweat. Is it the family of the other two girls who died in Yin Fu? If you want to get DNA samples from those two girls, you have to go to Yin Fu. There are many dangers in Yin Fu. It's not easy to go in and out once.

After thinking for a long time, Qin Ying still didn't want to give up the clue, so she found Pang Huihui, the woman of the Fang family. After knocking on the door, Pang Huihui opened the door for Qin Ying. The door only opened a small gap. Pang Huihui stood in the room and asked, "who are you looking for?"

"Auntie Pang, I have something to do with you." Qin Ying said with a smile.

"I don't know you. Are you a salesman?" Pang Huihui is very vigilant to say.

Qin Ying is speechless. Does she look like a salesman? So she said, "aunt Pang, I want to talk to you about Fang Nan."

"Fang Nan?" Pang Huihui was stunned for a moment. She immediately remembered something and said, "are you a policeman? Have you heard from Nannan? "

"There's a little clue. I'm not sure I found Fang Nan." Qin Ying can only speak vaguely. If yu Qianqian is not too busy to walk out, it will be much more convenient to take her with her. The police are still a very professional in China, and most people give the police face.

Pang Huihui thought for a moment and said, "come in." Seeing that Qin Ying was a young girl, she relaxed her vigilance. Even the police officer certificate also forgot to check, put Qin Ying into the door.

After sitting down in the living room, Qin Ying asked, "Auntie Pang, do you have Fang Nan's things at home?"

"What is it?"

"It's underwear or sweaters or sweaters or pants."

"Yes, what do you want that for?" Pang Huihui asked curiously.

"Well, those clothes have dander or hair on them. I'll take them back for DNA identification to see if there is Fang Nan's information. Recently, the state has established a DNA archive. As long as there are archived data in the database, I can find myself." Qin Ying looks like a policeman.

"Sit down and I'll look for it." Pang Huihui went into the room.

Qin Ying looked at the house. It's a house with a history of at least 30 years. The pattern is conservative and the decoration is old. Many places have been repaired. It's a design of two rooms and one living room. The house Pang Huihui entered should be the one Fang Nan once lived in.

Seeing this, Qin Ying can't help shaking her head. This place is too strange for her. She has no memory. It's definitely not Qin Ying's home. She saw a picture of the whole family. The young couple on it is Fang's and the little girl nestling between them is Fang Nan.

Qin Ying looks at Fang Nan in the photo carefully. She feels very familiar, but she can't remember where she saw her. She is surprised. In this way, Fang Nan must be someone in the middle of the twenty-seven nights. After twenty-seven Su was reborn, her appearance changed. It was very difficult to identify who was who from her facial features.

After a while, Pang Huihui came out with some underwear and thickened clothes made of wool. Qin Ying takes out a magnifying glass and looks at it carefully. Because these clothes are all preserved after cleaning, there is very little dander and hair on them, and DNA identification can't be done only by hair. The best thing is blood drops, skin and meat. Such things rarely exist on clothes. Even if there are blood stains, they will be washed by the owner, and samples can't be collected.

After searching for a full hour, Qin Ying finally found more than a dozen hairs in different positions of her body. She asked Pang Huihui for the combs and toothbrushes Fang Nan had used. Unfortunately, these things were thrown away by Pang Huihui when she was cleaning her house for a long time. Qin Ying left Pang Huihui a little disappointed and went out of the Fang family.

Qin Ying still settled down in the countryside of Benzhou city. He cultivated the collected hair of Phoebe in warm water, and then observed it with a microscope. He used a restriction endonuclease paired with the probe to cut the long strand of DNA, so that the long strand of DNA with large molecular weight could be cut into many small fragments of different lengths.

In the gel electrophoresis apparatus with longer size, electrophoresis of DNA fragments after enzymolysis is completed, and the fragments will be separated in the electric field according to their length. The double stranded DNA fragments separated from the gel plate were degenerated into single chain fragments by alkaline solution, and then the gel plates were sandwiched in nylon film, so that these single strand DNA fragments were destroyed, transferred and permanently fixed on nylon film.

The radioactive DNA fragment was imprinted and hybridized with the single stranded DNA fragment on the nylon membrane. When the radioactive film is stacked with nylon film, the radioactive probe on nylon film will emit X-rays to expose the film, so that the positions of DNA fragments with different lengths of probes can be developed on the film. Such a strip pattern of characteristic DNA fragments is the so-called DNA fingerprint.

Due to the non repetitive character of DNA, the data of ribonucleic acid in close relatives are close at most, which is an important basis for paternity testing and family genetic inheritance in medicine.

After comparing the DNA data, Qin Ying was surprised to find that it was completely consistent with Qin Ao's data.

In other words, Qin Ao is Fang Nan, but why is Fang Nan's DNA data not close to his mother Pang Huihui and father Fang Neng? Qin Ying is a little confused. There must be something wrong with it.

Instead of busy telling Qin Ao the result, she called lengxiao's mobile phone to explain her discovery and said, "Mom, I'm confused. Why is Pang Huihui's DNA different from Qin Ao?"

"You are such a fool, which means Qin Ao is not Pang Huihui's own daughter." Lengxiao guessed the truth through the phone.

Qin Ying was a little dazed and said, "well, mom, do I need to explain this to Qin Ao?"

"Of course. Didn't you say Fang Nan lived with Pang Huihui for a long time? Maybe Qin Ao was adopted by Pang Huihui from childhood. Maybe Qin Ao was an abandoned baby and adopted by Pang Huihui. You just need to ask Pang Huihui all these questions. Qin Ao certainly doesn't know her origin. You can continue to help her find her biological parents. Qin Ying, you've done a good job. "

It turns out that Qin Ying knocked her head hard. She is really stupid. The society is complex. There are many family members who are not of the same origin. There are many reasons for this. There are many family members who come from several different families. People may not care about this when they are alive. Once they die, they will not care about it, The origin of family members will disappear with the death of people.

With doubt, Qin Ying found Pang Huihui again. She said to Pang Huihui, "Fang Nan has found it, but I still have a question, that is, Fang Nan is not your own daughter. What's the reason for that?"

"What? Did you really find Nannan? Is she all right? " Excited, Pang Huihui holds Qin Ying's arm tightly and looks at her nervously. After hearing the words "not her own daughter". Pang released her hands.

Covering his face, he shook his head and said, "I don't know. I don't know anything. Don't ask me."

Qin Ying's heart sank. It seems that there are many problems in Qin Ao's family background. Pang Huihui's expression is clearly guilt and fear. If Qin Ao is normally adopted, Pang Huihui will not have a sense of fear.

Looking at Pang Huihui, Qin Ying's mood was very complicated. She still held back her anger and said, "aunt Pang, don't be afraid. Even if Fang Nan is not your own daughter, you are still raising her. Fang Nan will be grateful for that."

"No, I don't want her. She's not my daughter. She's not." Pang Huihui yells at Qin Ying. In order to increase her strength, Pang Huihui waves her arms to drive Qin Ying away.

If this is not Qin Ao's foster mother, Qin Ying really wants to cast a spell on her. Thinking of Qin Ao's fierce temper, Qin Ying still gives up the idea of using magic. Since Pang Huihui denies it, let Qin Ao solve it by himself. Qin Ying just cooperates.

Qin Ying sighed deeply and said to Pang Huihui, "no matter whether you admit it or not, Fang Nan lives in this family. Aunt Pang, let me tell you. In fact, Fang Nan is more reasonable. Even if you get Fang Nan by illegal means, she will also remember you for so many years. It's not easy to raise a child, She is definitely not the kind of person who will bite the hand that feeds the hand, but you must confess to her what secrets there are in this, otherwise, even I can't help you