Secondly, most countries such as Russia, Canada, Japan, Australia and Britain allow cousins to get married. On the contrary, there are a few countries that prohibit cousins from getting married. China's initial marriage law did not explicitly prohibit cousins from getting married. It was not until the 1980s that cousins were prohibited from getting married in order to cooperate with the family planning policy of prenatal and postnatal care.
Before Hong Kong was colonized by Britain, Hong Kong was governed by British law, and it was not forbidden for cousins to get married.
PS 1965 From August 2000, researchers from the National Genetic Counseling Association of the United States conducted six large-scale studies on thousands of infants, including the descendants of married cousins. The results show that cousin's marriage is not dangerous to future generations. Studies have shown that the genetic defect of the offspring of unrelated people after marriage is 3%-4%, while the genetic defect of the offspring of cousins after marriage is 4.5%!
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