1、 Legal restrictions on embryo sex selection
In many countries, including China, embryo sex selection is restricted by law. This is because embryo sex selection involves a series of ethical and moral issues, such as gender discrimination and family balance. In China, the Administrative Measures for Medical Technology stipulates that sex selection of embryos is prohibited without approval. Therefore, in China, there are restrictions on the sex selection of the twins of two test tube babies, which need to meet the requirements of national laws and regulations.
However, in some countries, such as the United States, the United Kingdom and Canada, embryo sex selection is legal and regulated. These countries allow families to choose the sex of embryos under specific conditions, such as screening for genetic diseases, family genetic diseases and other factors.
In general, embryo sex selection is restricted by the laws of different countries, and families need to consider the relevant provisions of their countries when selecting.
2、 Limitations of medical technology
The implementation of embryo sex selection requires a series of medical technologies, such as in vitro fertilization and embryo detection. However, the current medical technology does not completely accurately and reliably realize embryo sex selection. The success rate of IVF and embryo testing is not 100%, and there is a certain risk of failure. Therefore, even if the family wants to select an embryo of a certain sex, it cannot guarantee the ultimate success.
In addition, for some special cases, such as screening of single gene genetic diseases, there may be some technical limitations. Some single gene genetic diseases are related to sex, but not all single gene genetic diseases can be avoided from being passed on to offspring through embryonic sex selection. Therefore, the limitation of medical technology also limits the feasibility of embryo sex selection.
To sum up, there are certain restrictions on medical technology in embryo sex selection, and families need to fully understand and accept these restrictions when selecting.
3、 Ethical and moral considerations
Embryo sex selection involves a series of ethical and moral issues. On the one hand, gender selection may lead to gender preference and gender discrimination, which has a negative impact on gender equality in society. On the other hand, sex selection of embryos may bring about problems of family balance, and sex selection of existing children may cause disputes.
In addition, some academic circles and moral ethicists also questioned the sex selection of embryos. They believed that natural selection should be respected and that the sex of embryos should not be artificially interfered with through technical means.
Therefore, ethical and moral considerations are also important factors to limit embryo sex selection. When choosing, families need to consider ethical and moral perspectives and weigh the advantages and disadvantages.
4、 Exceptions for hereditary diseases
Although embryo sex selection is restricted, there are exceptions in some special cases. If the family suffers from genetic diseases, it may screen the transmission risk of genetic diseases through embryo sex selection, and select embryos with lower sex risk. For example, if a family suffers from hemophilia and a female carrier is at greater risk of having a son, female embryos can be selected to avoid genetic risks.
In this case, the doctor will provide the family with reasonable advice on embryo sex selection according to the family's genetic counseling and genetic test results. Because of the risk of genetic diseases, the restrictions on embryo sex selection will be relatively loose.
Summary
To sum up, the sex selection of the twins of two test tube babies is limited. First, different countries have different legal restrictions, and families need to comply with local regulations. Secondly, the limitation and uncertainty of medical technology make sex selection of embryos not 100% feasible. In addition, ethical and moral considerations also affect the limits of embryo sex selection. However, there may be exceptions in the case of a family suffering from a genetic disease, and the family can conduct embryo sex selection according to the doctor's advice.
Therefore, when making decisions, families need to comprehensively consider legal, medical, ethical and moral factors, weigh the advantages and disadvantages, and make choices on the basis of compliance with conditions and feasibility.
