Chapter 349: Washing Dirty Linen in Public

After the public lecture ended, Harry found that most of the children couldn't wait to rush to the canteen, while Clara was packing her lesson plans on the podium with a calm face.

"Uh, Professor Clara?" Harry walked up and asked. "I don't know if you have time to answer some genetics questions for me?"

"Of course, Sineipu told me about this matter," Clara looked at Luo Nade beside Harry, then deliberated and opened her mouth. "This is a difficult case of paternal half-sibling paternity testing, which itself has a certain degree of unreliability."

"It doesn't matter, Luo Nade knows everything," Harry noticed this subtle action.

"Oh, great," Clara nodded. "Actually, I also participated in the doctoral program. In other words, I also know everything."

Harry blinked.

"In this case," Clara smiled, then picked up a piece of chalk and wrote on the blackboard again. "We need to identify the kinship between paternal half-siblings. Then we first notice that we cannot use sex chromosomes to distinguish, because what the father passes to the brother must be the Y chromosome, and what he passes to the sister must be the X chromosome."

Harry nodded, he knew this.

"We can only use the comparison of autosomes to conduct analysis, but this creates a problem. In the case where Voldemort has already passed away, we cannot judge his genotype," she wrote two rows of letters on the blackboard, then circled one on the left and one on the right in each row arbitrarily. "By comparing Delphini and Bella's genes, we can determine half of Voldemort's genes, but this half is completely random. It is possible that each of the 22 autosomes is half the same, or each is completely different. If, for example, four to six are detected to be the same, we cannot accurately or even approximately judge whether the two are siblings from genetics, because such similarity can also be detected between many cousins."

"I checked some papers. Among several credible cases, none of them didn't use the mother plus siblings to deduce most or even the complete genotype of the father, but now there is only one Delphini, we cannot accurately know the father's genotype."

"But we can at least still judge the blood relationship, right?" Harry asked. "Can prove they indeed have a kinship, and then as long as we prove Voldemort has no other relatives, it's fine?"

"From a scientific point of view, we can do this, prove that even if they are not siblings, they are at least some kind of close relatives," Clara nodded. "But now there is a more troublesome matter, that is the magic ritual."

Harry glanced around, then asked in a low voice, "Are you talking about the ritual of Voldemort's resurrection?"

"Yes, not only do we know this ritual, the Death Eaters know it, and the White House knows it," Clara tapped the table. "One very obvious thing is that magic will not affect things outside your cognition. In other words, in the process of the reshaping of Voldemort's soul in the body, since he didn't realize the existence of things like genes, he wouldn't go to change the genes. Therefore, the genes of that body of his should be composed of three parts: you, his father, and the Death Eater who offered flesh and blood: Rodolphus Lestrange."

Harry swallowed a mouthful of saliva.

"In this case, we compare your genes with the new version of Voldemort, and at least one-third of the chromosomes should be exactly the same. If we consider Saruman's matter, that is to say, there is a one-fourth probability that you and Voldemort inherited the same genes from his father, but Voldemort's father only accounts for one-third of the new version of Voldemort, which means you only have a one-twelfth difference."

"And Voldemort only gave birth to Delphini after his resurrection, right?" Ron, who had been confused, raised a key question.

"That's right," Clara pointed at the blackboard forcefully. "That is to say, the real situation now is that at least one-third of the genes on Delphini come from Harry—no matter if he is a pure-blood Harry or a Harry with Dark Lord blood."

"And if we want to prove that Saruman indeed exists, we can only go to prove that extra one-twelfth," Clara shook her head. "But this refers to the similarity between Saruman and Voldemort, converted to Delphini, it is one-twenty-fourth, which has a large probability of being different, and can prove nothing."

"But as long as that one-twenty-fourth is detected, can't it be proven?" Luo Nade asked.

"The problem is that none of us knows how genes are combined in that magical resurrection ritual. It is possible that each party provides complete seven or eight pairs of chromosomes, but it is also possible that each party provides fourteen or fifteen, which is the most extreme case where Harry and Delphini can still have no connection, or have more than half of the chromosomes detected to be the same."

"We cannot prove these things from the perspective of probability, because the samples are too few, resulting in almost no difference," Clara spread her hands. "In other words, because of the existence of this resurrection ritual, it leads to us being unable to prove any conclusion: unless a low-probability event occurs, where more than 18 chromosomes are detected to be the same, then it can be proven that they are indeed paternal half-siblings. Otherwise, even if they have no similarity at all, it cannot be bitten to death that they have no kinship."

"You said before that genes have billions of base pairs, how come samples are missing?" Luo Nade asked dizzyingly.

"Because I have been talking about those few characteristic points on chromosomes!" Clara pointed at his forehead, hating that he didn't live up to expectations. "Calculating all base pairs, you and a curly-haired baboon also have more than 90% similarity!"

"It seems there is not no way," Harry touched his chin thoughtfully. "Just like I planned to use Luo Nade and Jin Ni's hair to do a test before, can they have at least eighteen pairs of chromosomes that are similar?"

"No, the similarity between Luo Nade and Jin Ni is also uncertain. Extremely speaking, if Luo Nade took the left half when taking his father's chromosomes, and Jin Ni took all the right half," Clara drew a vertical line between the two rows of letters. "And in the mother's genes they happen to be the opposite, that is to say, they can even be a pair of siblings with no common points at all. This probability is extremely small, but not completely impossible."

"Then take a few more pairs of siblings," Harry proposed a new idea. "Pick the pair that is most suitable for us?"

"This again involves a conditional probability problem. We calculated that the probability of Harry and Delphini detecting more than 18 matching chromosomes is very small, then that is to say, if this result is detected," Clara shrugged. "The White House will prioritize suspecting you of cheating, rather than suspecting that the low-probability event occurred."

"The most troublesome thing is that the White House doesn't seem happy to see the unification of the British Wizarding World, so they are trying every means to obstruct this matter," Clara lowered her voice. "CIA has very professional people in both worlds. If they use their heart to check, it is easy to find out cheating. If you conduct the test truthfully, it is just continuing to argue; but if cheating is exposed, then things will become passive."

"You just honestly hand your hair to Sineipu," Clara suggested mysteriously. "Leave things to the adults, you should know that Sineipu has already turned Hofa, who is responsible for the testing, against them."

Harry smiled embarrassedly, scratched his head, and changed the topic: "Speaking of which, you know much more than I imagined."

"Of course, I deeply participated in the doctoral program, seen almost all doctors, Sineipu thus determined that I am credible," Clara's face revealed some nostalgic look. "Doctors foresaw fate, so we will never go against him."

"Fate... you used 'him' instead of 'it'?" Harry frowned. "I don't know if it's possible, after all, time and space are frozen now, and Death is also isolated. Can you tell me how doctors understand the relationship between fate, time, and Death?"

"You guessed right, once we didn't find it convenient to say these things because we were worried about angering Death," Clara shook her head lightly. "But now I still can't tell you, only you, because you are involved with too many fates... Luo Nade can't either."

"After Death is isolated, ordinary wizards will have more autonomy, but you, Harry, you are the one favored by fate. Telling you rashly might cause unimaginable consequences—" Clara bit her lip. "If Death is not there, the space-time we live in is far more fragile than you imagine."

After a brief silence, Clara coughed unnaturally. "Yes, actually I shouldn't stay by your side for too long, I am preparing to return to Beauxbatons."

"Why?" Harry revealed a very confused expression.

"If Death is still watching you, then He will remind or confuse those of us who can see fate, to avoid causing accidents. But now, I am worried about being counterproductive." She stopped the topic wanting to speak but stopping.

"You are about to miss the meal time, hurry to the canteen."

Harry glanced at his watch. Indeed, the conversation delayed them for too long. Seeing Clara's look of being unable to speak, Harry thought of Nawei's discovery again. Perhaps, doctors didn't put everything in the TARDIS. Perhaps there was some thing, some conclusion, hidden somewhere in the Department of Mysteries.

And the hint Dumbledore left for Nawei might also be out of consideration for bypassing Harry, or bypassing Death's gaze... Harry's thinking diverged, until Luo Nade's voice interrupted him.

"She is right, I am starving," he pulled Harry's hand and walked quickly out of the classroom.

"Run, little smarty, run," Clara said softly. ===== CHAPTER 350 =====