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Will mice evolve during human space migration?
Nowadays, human civilization has developed to a great extent, but the damage to the earth by human beings is also enormous, so for the continuation of human civilization, space immigration may be the way out in the future. But space is different from the earth, where radiation and weightlessness will affect people's normal survival. For mankind, it is the main way to continue civilization and give birth to new life.
Can humans thrive in the universe? Scientists conducted a pregnancy experiment, and the results were surprising.
It is relatively simple for human beings to have children on earth, but it is very difficult to mate, conceive, be born and survive in outer space, even several grades higher than on earth. Therefore, for the continuation of human civilization, scientists have also conducted a series of related experiments.
Usually, people will choose other creatures to replace them when conducting experiments, and whether humans can have children in space is also used at this time. 1994, Japanese scientists took medaka into space. Through the continuous investigation and help of scientists, medaka is also a kind of small fish that successfully hatched in space and propagated to three generations. Although it has been proved that creatures were born in space, there are differences between fish and other creatures.
Generally, fish are fertilized in vitro, but many species on earth are conceived in vivo. Because there is a big difference between in vitro pregnancy and in vivo pregnancy, it may be meaningless to experiment with Japanese scientists. Because of the difference between in vitro fertilization and in vivo conception, scientists conducted pregnancy experiments on mice.
This time, scientists took a pair of mice into space, but after living in space for 18.5 days, they failed to mate and the two mice refused to have sex. Some people think it's a mouse problem. But in fact, mice are not celibate, they usually seize every opportunity to reproduce, so this experiment proves more the difficulty of getting pregnant in space.
Because the last mouse experiment was unsuccessful, many scientists also conducted related experiments later. However, although some mice in space are pregnant, most of the born cubs have problems. For example 1995, American scientists did a mouse experiment. Although the mouse was pregnant this time, the newborn could not turn over. Later, scientists mated mice in space with mice on earth and found that the organs of the born mice were abnormal and grew slowly.
Although the experiment of mice getting pregnant in space has not been successful, scientists have been insisting on it, so in 20 13, scientists brought frozen mouse sperm to the International Space Station, and then brought it back to the earth after a period of time. Finally, all the mice bred were normal, so this is also a milestone.
Although the experiment of pregnant mice in space has achieved results, there is still a long way to go for human beings to reproduce in space. So for the future of mankind, the progress of science and technology has played a key role.
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