Not long ago, an endangered animal bred by American scientists using cloning technology was born. Unfortunately, this Asian bison named Noah died of dysentery two days after birth. Scientists estimate that there are only about 36,000 Asian bison left in the world after human killing and the deterioration of living environment. Although "Noah" has died, researchers claim that this is a major victory for cloning technology to save endangered animals. This technology is opening up the road of rebirth and resurrection for endangered or endangered wild animals.
"Noah" is the first animal conceived by the uterus of other species and successfully passed the embryonic development stage. The other five cows implanted with cloned embryos of Asian bison all spontaneously aborted after implantation. Experiments show that cross-species cloning is feasible. Autopsy found that Noah's death was not caused by cloning cattle or using cross-species reproductive technology, because dysentery is very common in farm animals, and the mortality rate can reach 100%. In order to create "Noah", scientists took a cell from a dead bison, implanted it into the egg cell of a breast-fed cow, and removed the DNA from the egg cell to ensure that the calf was a purebred Asian bison, not a hybrid offspring of bison and cows.
However, some scientists have questioned the practice of saving endangered animals through cloning technology. Gary, head of the bioethics program at the University of Iowa, said. Constark said that these animals are on the verge of extinction because they can't survive in the current environment. If the environment does not improve, clone them and let them suffer in this world.
In June 5438 +2000 10, a goat named Celia was killed by a fallen tree while wandering on the rugged plateau in northern Spain. The death of "Celia" has attracted much attention, because it is the last coarse-haired giant horn Bukado goat in the world. The Spanish government has made great efforts to protect Bucade goats, but it failed in the end. The last Bukado ram died in 199 1. Spanish and American researchers are cooperating to clone Buckard goats from cells left by Celia. If the plan is successful, it can be an example of cell cloning of extinct animals.
However, Karen of the World Wildlife Fund. Barakona commented that this (Celia) project is simply a Frankenstein putting together monsters, and I don't see any value in it. Because animals will not be endangered because of population decline, the crux lies in habitat disappearance or poaching. Unless people pay attention to these reasons, cloning will not solve the problem.
There is a small piece of 1 animal fur near the entrance of the wildlife center in Bonnoron Park, Australia. The description next to it shows that it is a kind of fur with a marsupial wolf. But in fact, there has been no trace of this animal in Australia for a long time. The marsupial wolf disappeared 70 years ago because of the indiscriminate killing of human beings. Australian biologists decided to use DNA samples obtained from specimens to implement the biological cloning plan. They have found deoxyribonucleic acid (DNA) in the cells of this animal, and are currently carrying out a biological cloning project. This 6-month-old wombat specimen has been soaked in alcohol since 1866. Scientists have finished sampling the heart, liver, muscle and bone marrow of this specimen and started to study the genetic code of this animal. Once the researchers recover the damaged genetic code of the specimen, they will implant the genetic blueprint into the eggs of the marsupial anteater, a close relative of the Tasmanian devil or the Tasmanian wolf, for cultivation.
Although there are plans to clone extinct animals in many parts of the world, Australia's marsupial cloning plan is the first research plan to obtain high-quality DNA samples.
Translation:
Senior high school biology teaching thesis: Endangered animals are expected to be reborn
From here, yes:
Recently, an endangered species cultivated by American scientists by cloning technology was born. Unfortunately, this baby Asian buffalo named Noah died of dysentery two days after birth. Scientists estimate that there are only about 3.6 million Asian bison in the world after hunting and the deterioration of their living environment. Although "Noah" has died, researchers claim that this is a major victory for cloning technology to save endangered species. This technology is to open up the road of rebirth and resurrection for wild animals that are on the verge of extinction or imminent extinction.
"Noah" was the first animal to get pregnant with other species and pass the embryonic development stage smoothly. Another five Asian buffalo embryos were implanted into cloned heifers, all of which were implanted automatically after abortion. Experiments show that cross-species cloning is feasible. The autopsy results showed that Noah's death was not caused by being a T-type cow or using cross-species breeding technology, but by diarrhea common in farm animals, and the mortality rate could reach 100. In order to create "Noah", scientists implanted egg cells into buffalo from the medal of death and removed the cow DNA from the egg cells to ensure that the Dallas calf was a pure Asian bison, not a hybrid of buffalo and cow.
However, some scientists have questioned the practice of saving endangered animals by cloning technology. Gary, head of bioethics program at the University of Iowa. Constance Wardak said that animals will become extinct because they can't survive in the current environment. If the environment doesn't improve, they will be cloned to make them suffer in this world.
In 2000 1 month, the female goat "Celia" gave birth to a baby goat under the rugged plateau in northern Spain, and was unfortunately crushed under a fallen tree. Celia's death is remarkable because she is the last coarse-haired Budoka goat in the world. The Spanish government made great efforts to protect the goats in Budoka, but eventually they suffocated and died. Finally, the ram in Budoka died at 199 1. Researchers from Spain and the United States cooperate to clone more Buka goats by using the remaining Celia cells. If the plan is successful, then cell cloned animals can become an extinct example.
However, Aaron of the World Wildlife Fund in Khartoum. Barakona commented that the (Celia) project is basically a science freak Frankenstein monsters together, and I don't see any value in it. Because animals will not be endangered because of the decrease of population and the disappearance of habitats, it lies in poaching. Unless people pay attention to these reasons, cloning will not solve the problem.
A hide was placed near the entrance of the wildlife center in Bonolong Park, Australia, and the description next to it showed that it was a marsupial skin. But in fact, Australia has seen traces of this animal. The marsupial wolf was extinct 70 years ago because of human hunting. Australian biologists decided to use DNA samples obtained from specimens to carry out biological cloning plan. They have discovered the deoxyribonucleic acid of animal cells and are now carrying out a biological cloning plan. This 6-month-old specimen of 1866 marsupial wolf has been preserved in alcohol solution. Scientists have completed the sampling of heart, liver, muscle and bone marrow from this specimen and started to study the genetic code of this animal. When the researchers restore the genetic code of the damaged specimen, they implant the genetic blueprint into the eggs of the cousin of the marsupial or the anteater of the marsupial to reproduce.
Although there are plans to clone extinct animals in many parts of the world at present, Australia's marsupial cloning plan is the first one to obtain high-quality DNA samples from research.