In the Jianghan Hotel, Yue Guanchao informed everyone of the results of the three of them's night visit to the Dragon King Temple. They did not expect that the Fish God might actually have an entity.
After listening to what they said, Sun Daqiao asked, "Forgetting other things, does the river sturgeon really come out of Shennongjia?"
Song Siyuan nodded matter-of-factly and said, "Taoist Cui mentioned in his words that they were going back to Wushan, which is exactly the southwest entrance to Shennongjia. If what he said is true, then this white river sturgeon may indeed come from Shennongjia.”
She paused and looked at everyone: "Of course, it's not that all albino animals come from Shennongjia. It's entirely because the mutated gene of the white river sturgeon is similar to the albino animals in Shennongjia."
"Did you hear that? Everyone has moved the stools. Mr. Song is going to teach us a new saying."
Yue Guanchao and others gathered around to look at Song Siyuan. They also wanted to know what this gene was, and they also wanted to know the secret of albino.
Song Siyuan coughed a few times, drew a twist-like double helix structure diagram on a blank piece of paper, and showed it to everyone.
"Hey, isn't this Tianjin hemp flower? The gene that dares to love Westerners is hemp flower." Yue Erpao teased.
Song Siyuan nodded towards them: "It's probably a similar structure. This structure is called a gene sequence. In 1909, Danish biologist Johansson renamed the 'genetic factor' he proposed to be more accurate based on Mendel's genetic laws. 'Gene'."
"Since then, many Western scientists have begun to study genes, and using conceptual theories, they have begun to test the existence of genes. Currently, fruit fly experiments have proven that genes do exist in organisms. It is clearly stated that genes are DNA fragments with genetic effects. This kind of fragments are arranged linearly in a certain regularity, and they look like intertwined cannabis flowers."
Her eyes became mysterious: "Not just animals, but also humans in nature. Every living thing has its own genes, and genes can be inherited through offspring. To put it bluntly, it is what we now understand as the body, hair, and skin that are inherited from the parents. , the body will take on the characteristics or personality of the parents.”
"At the same time, genes are also divided into dominant genes and recessive genes. Most organisms have both dominant genes and recessive genes. Recessive genes are deeply hidden in genes and only appear under special conditions. In addition, subtle and special mutations occur in the genes of organisms to form individuals that are different from other groups."
Song Siyuan's words were so sophisticated that they involved so many professional terms that everyone frowned. Seeing that it was difficult for them to understand, they had no choice but to explain it in layman's language again.
She thought for a moment and continued: "This is just like the black pheasant we saw in the Qinling Mountains. This kind of chicken is an individual that is different from the norm. Biologically, such an individual does not exist, but it is possible It was the recessive genes in the previous generation that were activated, which gave them their distinctive appearance."
"I told you at that time that the ancestors of this pheasant probably hybridized with other birds. In the process of biological evolution, a large number of gene fragments were fused, causing the genes of the black pheasant to be covered. This gene It’s a recessive gene.”
"Under normal circumstances, the recessive gene does not manifest itself. Only under special conditions, the recessive gene will appear instead of the normal gene after the normal gene fails. Such special conditions may be natural or man-made disasters, or species hybridization. It could be a plague disease, or it could be environmental alienation.”
Song Siyuan paused, picked up a pen and drew a marijuana flower: "In short, after the recessive gene of ordinary pheasants is expressed, it will eventually show this black effect, but one thing is completely impossible, and that is Become white.”
Yue Guanchao asked: "Why? Aren't there also white rabbits and white doves?"
Song Siyuan nodded towards him: "You are right, but wild rabbits and wild pigeons are not white. They are artificially selected to have white characteristics. In other words, they are the result of human intervention, natural evolution, and high probability There will be no pure white animals.”
"This is because, in nature, white is the most difficult color to camouflage. If animals want to live safely in the wild, they use body color to camouflage them. Most of them evolve their bodies according to their living environment..."
For example, tigers and leopards in East Africa are mostly burnt yellow with mottled stripes. On the Arctic ice sheet, even bears are white. In the jungle, there are even stick insects that disguise themselves as bamboo poles, and dead insects that disguise themselves as dead leaves. Leaf butterfly.
The evolution of organisms requires the evolution of physical features and colors according to the external environment. In order to better avoid natural enemies and survive, they adopt such an evolutionary strategy.
Unless it is in a completely white ice and snow environment, the white color in any natural environment is more conspicuous, and it is not easy to camouflage or hide in the natural environment.
It can be said that the physical appearance of living things will evolve into red, orange, yellow, green, blue, purple and black, but it will not evolve towards white. The genes of animals understand that as long as they evolve into white, they will probably have difficulty hiding themselves from natural enemies. The probability will also greatly increase.
In other words, white animals are more likely to be found in nature, which leads to hunting by natural enemies and humans. When a white animal has a higher mortality rate, it is difficult for it to have offspring, and it is difficult for this albino gene to survive. .
White is a taboo color for the evolution of life, and it is also the color of death!
Under the rules of biological self-interest evolution, animals will never actively evolve into a color that is not conducive to survival. If white appears in the population, there is a high probability that a genetic mutation has occurred.
When Song Siyuan said this, the origin of the albino animals in Shennongjia was already clear: "The large number of white animals in Shennongjia is either a genetic mutation, or the environment in Shennongjia has changed, becoming suitable for the survival of albino animals, or both. "
"The same is true for river sturgeons. Most river sturgeons are gray and black. If they are white, there is a high probability that the previous generation grew up in a special environment. This environment is closest to Jianghan in Shennongjia. In addition, Cui Taoist After feeding them food, it has been suggested that the river sturgeons come from Wushan, so my guess is probably accurate."
Yue Guanchao listened to what she said so far, and said slowly: "So far, we basically know that the secret of Guanluoyin lies in Baijiang Sturgeon, Cui Taoist and the God-pressing Craftsman are in the same group. At the same time, these God-pressing Craftsmen design Hua Boss for the purpose It may be because of the Beifu Clothing Tomb in Shennongjia. With all this information gathered together, maybe the trip of Jiang Sturgeon to Wushan is also related to the Beifu Clothing Tomb."
