Chai Jue asked Le Lin: "If the high-stemmed peas are combined with the short-stemmed peas, and the grows are high-stemmed, then where do the short-stemmed peas come from?" ”

"You read on. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ”

Le Lin said.

Chai Jue continued to read: "I named the four pea seedlings obtained as Ziben A, Ziben B, Ziben C, and Ziben Ding, and pollinated each other, and the pea seeds produced were sown again in the following year, and a number of Sunben pea plants were obtained, and the results were two: high stems and short stems. Among the 107 pea seedlings, 81 are tall and 29 are short. ”

According to the note, Le Song later used purple and yellow peonies, pink and plain lilies and other flower seedlings to do this experiment, and the results were also the same - the difference between plants of different colors was close to three to one in Sun Ben's generation.

At the back of the notebook, there are full of accounts of these experiments.

Chai Jue couldn't help but be curious: "Why is it just three to one, is it destined in the dark?" ”

"The Law of Separation."

"The law of separation?"

"Hmm," Lerin nodded.

In the nineteenth century, John Mendel, the father of modern genetics, came up with the "Mendelian law of genetic segregation" after eight years of hard work and many pea experiments, which is one of the three basic laws of genetics.

Thinking of this, she suddenly felt a sense of distress in her heart.

This is the biology class knowledge in high school at the beginning of the 21st century, and if Le Song was a modern person, he must have learned this, and he would not have to do so many experiments with hard work.

For a moment, an endless sense of loss came to my heart.

"What's wrong?"

Chai Jue looked at "him" with a different expression, and asked with concern.

Le Lin shook her head and smiled bitterly: "No, it's nothing. Let's move on to the 'law of separation'. ”

She picked up a dead branch on the ground, squatted down and wrote on the ground: "Explicit, hidden." ”

"Explicit, implicit?"

Chai Jue was even more puzzled.

Le Lin drew a simple diagram on the ground and said, "When organisms pass on their own characteristics to their offspring, there is a certain pattern. ”

"I want to hear about it."

Pointing to the top of the chart, Lelin said, "Tall peas contain a substance that determines the traits of tall stems, which we will call 'tall and tall' for the time being, and purebred dwarf peas also contain a substance that determines the traits of short stems, we call it 'dwarf'." ”

Chai Jue listened with relish: "Then? ”

Lelin connected the plants of the first generation of the chart to get a new tree diagram.

"When they are crossed, there is only one thing that comes out of the plants: 'tall and short'," she says. Because in pea seedlings, because the tall stem is dominant to the short stem, the daughter plants are all high-stemmed peas. ”

"Explicit, that is, what it means to be revealed?"

"Yes."

"But when the offspring are pollinated with each other, the result is a different story."

Lelin picked up the dead branch and added a few more lines to the chart on the ground.

"After the children pollinated each other, there are four cases of grandchildren: 'tall and tall', 'tall and short', 'tall and short' and 'short and short'."

Chai Jue suddenly realized: "Because the tall stem is dominant, among these four types, the three types of 'tall and tall', 'tall and short' are all tall stems, and only 'short and short' are short stems." ”

Le Lin nodded: "That's right, this nearly three-to-one coincidence came about like this." ”

Chai Jue clapped his hands and praised: "Strange, wonderful." ”

"Well, nature is wonderful."

"I'm talking about Ling Zun."

Le Lin raised her eyebrows: "Oh? ”

Chai Jue shook his head: "You are right, Ling Zun is indeed not an ordinary person. ”

After that, he looked at the back of the notebook carefully, and was even more surprised: "Your father also took kittens and puppies of different coat colors for this experiment." ”

"That's right."

"Is the result of this experiment effective when applied to us?"

"Of course."

Chai Jue thought about it seriously for a long time, but he was still skeptical: "Really? ”

Le Lin pointed to her eyes and said, "Although I haven't seen the first emperor, I guess he must be the eyes of double eyelids." ”

"Why?"

"Because double eyelids are dominant relative to single eyelids."

"Ah......" Chai Jue pondered for a moment and replied: "The emperor's grandmother has a single eyelid, if the emperor's grandfather is also a single eyelid, then the father must have a single eyelid." But my father had double eyelids, so you can infer that my grandfather must have had double eyelids. ”

"Well, exactly, if you think about it carefully, did your imperial grandfather have double eyelids?"

Chai Jue recalled carefully, suddenly frowned, and asked, "Le Lang, will you get it wrong?" ”

"What's the opposite?" Lelin didn't know what he was referring to.

"A single eyelid is dominant compared to a double eyelid, right?"

Seeing his categorical appearance, Le Lin suddenly became unsure, and thought carefully for a while before saying, "I'm not mistaken, double eyelids are dominant relative to single eyelids. ”

She suddenly thought of why Chai Jue asked this question, and asked in amazement: "Could it be that the first emperor had a single eyelid?" ”

Chai Jue hurriedly shook his head and said, "No, no, the imperial grandfather does have double eyelids." ”

After that, he explained in detail: "Because my mother has a single eyelid, but I have double eyelids, I was confused for a while, and then I thought about it carefully - my father has double eyelids, whether my mother has single eyelids or double eyelids, I may have double eyelids, right?" ”

Le Lin didn't doubt him, nodded and said, "Well, that's right. ”

Chai Jue opened the topic without a trace and said, "How do you know so much?" ”

Le Lin was stunned for a moment, and then said: "In the study room of the Marquis of Anguo's Mansion, there are also some books that talk about these conjectures, but there are no such detailed experiments, and I happened to have read those books." ”

"This discovery is so amazing that we should immediately inform our father, tell the world, and give your father a good name." Chai Jue also did not doubt him, and suggested.

Lelin shook her head.

……

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