In addition to the more famous desert in Africa, other places can be said to be quite suitable for wild animals to survive, and because of this, some strange species can often be found there, and some people even say that some of the prototypes of monsters in "Catch the Demon" may come from Africa?
I think there must be a lot of people who have seen "Catch the Demon", the movie portrays a lot of monsters, and these monsters can not only transform into the appearance of adults, even the original appearance and body shape are very similar to us, but these similarities are not all imagined, the prototypes of these monsters are really genetically inextricably linked to us humans, such as this strange species, like the miscellaneous fish soldiers in the book of catching demons.
Xenopus laevis, English name platanna, belongs to the frog family of the possum toad family, is a kind of aquatic frog inhabiting southern Africa, the whole body is often green-gray, the body is flat, albino species are often sold as pets, because of the disease will be edema, so it is often considered to be the prototype of the monster, and itself is a harmful invader.
Yes, the biggest feature of the Xenopus laureate is its hind feet, and the English name also means "strange feet", smooth, especially in line with its real physical characteristics. The three short claws on its hind feet can be used not only to shred food, but also to stir up mud to confuse enemies during combat.
In fact, when we see normal Xenopus, we don't think it's like the prototype of the monsters, in fact, after the Xenopus laureus is infected with the virus, it will become fat, and the bulging look makes people can't help but think of those yokai.
Although their bulging appearance is indeed quite funny, when you think about it, when you think about it, you can't laugh at all.
Biologist Charlemagne said that they have studied a large number of animals genetically, and few can be applied to vertebrates, while the genes of Xenopus laevis are extremely similar to human genes, in addition to the high similarity of chromosomal structure.
And we can look at the fragments of the gene structure of Xenopus laevis to gain insight into the genetic structure of prehistoric birds, frogs, dinosaurs and mammals 360 million years ago, and not only that, we can also understand the evolution of species by studying its chromosomes.
After long-term experiments and studies, we found that there are at least 1700 genes associated with us humans, such as asthma, heart disease and other special diseases such as genes are extremely similar, which allows doctors to know more about how to treat patients with these disease conditions in medical experiments.
Some people who have raised or learned about it say that Xenopus can even be used for pregnancy tests? How does a Xenopus pregnancy test? It's really hard to understand.
This is a pregnancy test in the 40s and 50s of the last century, after injecting the pregnant woman's urine into its body, if it appears to have symptoms of ovulation within 8-10 hours, then it proves that the woman is really pregnant.
Although there were other pregnancy tests at that time, but none of them were fast, and the operation was relatively simple, not only that, compared to other methods, the Xenopus pregnancy test was basically harmless to animals, plus an Xenopus laevis could be used for thirty years, so it was sought after by many doctors at that time.
Xenopus can eat everything alive, dying or dead, and was once known as a scavenger, but it became a pest.
Although this prototype of monsters living in Africa is an intruder, it has now become a endangered species because of the wanton hunting of local people.
Perhaps studying them can indeed lead to a better future for us, but how can our research guarantee that it does not fully affect their survival? Is it really a good thing to use them now for all kinds of experiments?
#"Flash hour" theme essay issue 2 #