Humans and chimpanzees can't have children? How do scientists know, speculate or experiment?

All species can find their place in the biological classification (phylum, family, genus, species), and we can see the distance of kinship. The most famous cat is the cat. We know lions, tigers, leopards, family pet cats and so on. Can be traced back to the same ancestor. If subdivided, tigers, lions and leopards all belong to cats, leopards and leopards, while pet cats are members of cats-cats-cats. Just like a towering tree, the longer it grows, the more branches it will have, and so will the species on the earth.

However, there is reproductive isolation between different species, which avoids gene exchange between different species, and the existence of reproductive isolation is also a sign to judge the emergence of new species.

From the existing results, we know that horses and donkeys can mate to produce offspring, but the mules of the offspring are infertile. Of course, this is also a special form of reproductive isolation. Although there are offspring, the offspring are infertile, so they can't pass on the exchanged genes. Horses and donkeys are different members of Equus and Equus, and they are closely related. The other two cats, the tiger and the lion, are members of the leopard cat subfamily, and they are also closely related, so they can mate to produce infertile offspring, such as the tiger lion or the tiger lion.

So whether chimpanzees, gorillas and so on. Those who are closely related to human beings can have offspring even if they can't have children. First, let's look at these animals that are closely related to human beings. They are very lively and special under the biological classification of primates. Eyes? Because of the existence of human civilization. Many people don't like to put themselves in biological classification, which gives people a sense of detachment.

Humans and some chimpanzees, gorillas, etc. All belong to the human family. There are 2 subfamilies, 4 genera and 8 species under Hominidae, and 2 subfamilies are Orangutansinae and Hominidae respectively. Under the subclass Orangutans, there is a genus Orangutans. Anthropoceae is divided into gorillas and Terrans, and there is a gorilla genus under gorillas. There are chimpanzees and bonobos under Terran. At present, chimpanzees belong to chimpanzees and bonobos, while Homo sapiens is the only species under the Terran, and the rest of Neanderthals became extinct hundreds of thousands of years ago.

Judging from this biological classification, modern people are closest to chimpanzees and bonobos. The modern genome sequencing project has detected the genes of more than a dozen species, and found that the genetic similarity between humans and chimpanzees is over 98%.

The two cases of hybrid offspring mentioned above belong to interspecific and intraspecific mating of horses and donkeys, and interspecific and intraspecific mating of tigers and lions, but now there are only homo sapiens under human beings, and there is no interspecific and intraspecific mating, but clues can be found from the genes of modern people. In ancient times, Homo sapiens mated with Neanderthals, and their offspring could have children. So can't different subordinate species complete mating and produce offspring?

Next, we continue to look at the third case of animal hybridization. Bottlenose dolphins and pseudokiller whales cross to produce sterile offspring cetaceans, which is a very rare hybrid animal. Bottlenose dolphins belong to the genus Dolphin of Dolphinidae. * * * There are two subspecies, Pacific bottlenose dolphin and Black Sea bottlenose dolphin. As can be seen from its name, fake killer whales are similar in appearance and larger in size, belonging to the dolphin family-fake killer whales. Therefore, the mating between bottlenose dolphins and pseudokiller whales is interspecific mating, which is rare and difficult.

But this is the problem, because there are mating cases of different species in nature, so humans and chimpanzees are also very close. Can they also have children? This is a taboo topic, and experiments are also forbidden. But in the last century, the former Soviet Union had an experiment in this field. Their original purpose was to get a tall but silly and obedient orc army.

This task was finally handed over to Ivanov, a famous biologist at that time, who wanted to directly fuse human germ cells with chimpanzee germ cells. At first, I chose to give human sperm cells to female chimpanzees, but it didn't work out. So later, I need to use another way. Ivanov found five young volunteers and signed a secret agreement, but in the end, according to the official statement, I didn't finish the experiment and finally got nothing. Therefore, at present, the government has not conducted any experiments.

For the descendants of humans and chimpanzees, acquiescence is not a problem, and it is certainly impossible to verify it through experiments, because it is a moral issue.

Text/science black hole, image source network intrusion.