My grandfather and my girlfriend s grandfather are brothers, can we both get married?

The general way to judge whether it is a close relative is to see if it is three generations apart, but in the end, your grandfather and brothers, their respective children, and you, are exactly three generations...How much should affect a little....As for the medical examination, it will be arranged at the time of registration, and at that time they will advise you whether it is better to have a daughter or a son...Take 10,000 steps back, even if you are close relatives, but the purpose of prohibiting close relatives from marrying is also to prevent genetic diseases, from the genetic analysis of biology, some genetic diseases are the choice of having a boy or a girl, when you go for a physical examination, the doctor will recommend that you give birth to a boy or a girl according to the hidden genetic pathogenic genes in your body, so don't worry too much! Happy newlywed!

The country seems to have a rule that only those who are related by blood for more than three generations can get married and have offspring! I don't know if the child will have a genetic disease in the future! I almost ended up with my cousin at the beginning, but luckily I stuck to my principles and didn't mess up!

As long as the parents do not object, the Yi people have many elder brothers' daughters marrying their sister's sons.

You are close relatives and married, which is not good for the offspring.

Summary. The third generation of close relatives is the first generation of their own (brothers and sisters), the second generation of parents (brothers and sisters of parents), the third generation of grandparents (brothers and sisters of grandparents), and the collateral blood relatives within three generations if they have a common ancestor within three generations.

Close relatives (or consanguinities) are those who are related by blood within three generations or more. If they intermarry, it is called a consanguineous marriage. Both of them have too many similar genetic factors for their offspring to be unable to produce mutations from them, and harmful genes pass them on to their offspring.

My grandfather and my girlfriend and her mother's grandfather are brothers, can they get married?

OK. Why? How many generations are we counting, and are there any health risks associated with marrying offspring?

My girlfriend is my cousin's virgin niece.

You can count the first generations yourself, definitely more than three generations. Her mom's 9 grandfather.

The next generation starts from that.

The third generation of close relatives is the first generation of their own (brothers and sisters), the second generation of parents (brothers and sisters of parents), the third generation of grandparents (brothers and sisters of grandparents), and the collateral blood relatives within three generations if they have a common ancestor within three generations. Close relatives (or consanguinities) are those who are related by blood within three generations or more. If they intermarry, it is called a consanguineous marriage.

Both of them have too many similar genetic factors for their offspring to be unable to produce mutations from them, and harmful genes pass them on to their offspring.