Well, i don't think there is a test because most people don't want too. The only thing that would happen if you were to have a baby with your 1st cousin, is that your baby could come out with possibly Down syndrome or some other disease because your genetics are too close.
The son of your First counsin is your First cousin, once removed. The son of your Second Cousin is your Second Cousin, once removed. The son of your First Cousin, once removed, is your First cousin, twice removed. etc. So the child of your any-kind-of-cousin is the same-kind-of-cousin, removed once more than your any-kind-of-cousin is from you.
Your first cousin's son is your first cousins once removed. Your second cousin's son is your second cousin, once removed. Your 10th cousin's son is your 10th cousin, once removed. The child of any kind of cousin is that kind of cousin, once removed.
Yes, the baby would be your cousin one more time removed from your relation to the cousin. E.G - if your second cousin has a baby, the baby will be your second cousin once removed and if you have children, they will be third cousins of the baby.
Your cousin once removed is the child of your cousin who is not described as removed, or the parent of your cousin who is not removed. For example, your second cousin once removed is the child of your second cousin, or the parent of your third cousin, depending on which of you is in the older generation.
Yes, the children of your cousins are also your cousins, but a different kind of cousin. The child of your first cousin is your first cousin, once removed. The child of your second cousin is your second cousin, once removed. The child of your first cousin, once removed, is your first cousin, twice removed. On the other hand, your child and the child of your first cousin are second cousins to each other. Your grandchild and the grandchild of your first cousin are third cousins to each other.
Yes, but they are a different kind of cousin. The children of your first cousin are your first cousins, once removed.
Your nephew's sister is your niece. Her son is your great nephew. Your nephew's sister might not be related to you if she is the child of a second marriage in which your sibling was not one of the parents. In that case, she is your nephew's half-sister and her son is not related to you either.
The daughter of a First Cousin is a First Cousin Once Removed. The daughter of a Second Cousin is a Second Cousin Once Removed The daughter of any kind of cousin Once Removed is the same kind of cousin Twice removed.
There is no such thing as any kind of cousin removed by any amount of percent. "First cousin 23 percent removed" is simply nonsense. You could have a first cousin twice removed, or three times removed or 23 times removed. You first cousin is the child of you aunt or uncle. You first cousin once removed is the child of your first cousins, three times removed is the grandchild, etc. But remember that you are the first cousin once removed to the child of your first cousin. So you also can have a first cousin once removed who is the first cousin of your parent; a first cousin twice removed who is your grandparent's first cousin, etc.
Your granddaughter and your first cousin are first cousins, twice removed, to each other.
Your grandson's third cousin is your first cousin twice removed, and you are hers. You count from the cousin who is closest in generation to the common ancestor in determining what kind of cousin relationship applies.
Thew brother of your mother's cousin is also your mother's cousin, and the same kind of cousins - first second, etc. So the question is really, "How are you related to you mother's cousin's granddaughter." Your mother's first cousin's grandchild is your second cousin, once removed.