How many generations will the marriage of cousins affect?

About three generations. Cousin Marriage In modern eugenics, the marriage between cousins is likely to cause recessive genetic diseases, but after marriage, the next generation will have dominant genetic diseases, which will greatly increase the incidence.

Because cousins are easy to carry the same type of recessive genetic diseases, they will not get sick because they are recessive genetic diseases under their own physical conditions. However, in the next generation, couples may carry the recessive genetic genes of their peers, and the chances of the next generation becoming dominant genetic diseases are obviously increased, so marriage within three generations is generally prohibited. But in the end, whether or not to get married depends on the feelings of two people, and whether or not to raise children is also a problem to be considered. After all, you have to take some risks.

Matters needing attention

1. Parents and children, grandparents and grandsons, grandmothers and grandfathers, grandsons and granddaughters cannot get married.

2, and uncle, uncle, aunt, aunt can not get married.

You can't marry your brothers and sisters, cousins and cousins.

4. Brothers and sisters from the same parents (including half brothers and half brothers). That is, children of the same parents cannot get married.

5. uncles, uncles, aunts, nephews (females) and nephews (females) of different generations. Is that an uncle can't marry his brother's daughter

The above contents refer to Baidu Encyclopedia-consanguineous marriage.

The above content refers to People's Daily Online-Inbreeding makes Yemen face serious social problems.