The combination of sperm and egg is life, which is not only the common point of view of the scientific community, but also the inherent knowledge of biological books in our student days. However, a recent joint study by Chinese and American embryologists may have overturned this view.
The research was carried out by Dr. Xu Xiaoming, Director of the Reproductive Center Embryology Laboratory of Beijing Jiayuan Hospital, Dr. Xu Xiaoming, a well-known embryologist, and Professor Meng Li, Director of the Reproductive Center Laboratory in Los Angeles, California. Since 2015, Dr. Xu Xiaoming and others have started this project. Explore research.
Their preliminary research results show that during the first mitosis of human fertilized eggs, the parental chromosomes are not fused, but each maintains spatial independence. This means that the fertilized egg at this stage cannot be called the “life” in the true sense, so the concept of “start of life” will be redefined.
For this discovery, many netizens expressed shock and unbelievable. There are high school students who are reading: "There is no such thing as this year." Some netizens tweeted: We should all be charged for the call, and China Mobile is the "start of life."
Redefining the term "starting of life" sounds a bit illusory to ordinary people, but in fact the significance of this research is far more than that, and it has a very positive impact in real life: it can To some extent, it explains why parents have normal chromosomes but their children have chromosomal abnormalities. It may also promote the improvement of assisted reproductive technology, such as changing the previous frozen egg technology to frozen embryo technology.
For some Catholic countries, it will help to overcome ethical and legal barriers and change the practice of allowing only 1-2 eggs to be fertilized. Because the fertilized egg is life in the previous point of view, the law prohibits freezing embryos. Couples receiving assisted reproductive technology can only fertilize 1-2 eggs at a time, and excess eggs can only be frozen, while the efficiency of frozen eggs is much lower than that of frozen fertilized eggs.