No. Except for identical twins, the genetic makeup of each person is different. However, the more closely related you are to someone, the more similar your genetic makeup. So the genetics of siblings is more similar than of first cousins.
First cousins born on the same day are called "double first cousins." This term is used when two siblings from one family have children with two siblings from another family, resulting in their children sharing both sets of grandparents. Double first cousins share a higher percentage of genetic material than typical first cousins.
No. First cousin share 1/8 of your variable genes and only 1/32 with second cousins. With third cousins you share only 1/128.
You would have a variety of different relationships to the cousins of your first cousins. Some of them are you and your siblings, and some of them are also your first cousins. Second cousins of your first cousins may also be your second cousins. In addition, your first cousins will have many cousins who are not related to you at all. You are lreated to your first cousins because each of you have one paret who is a sibling of one parent of the other. But each of you also has one other parent, who also has siblings and the children of those siblings are cousins to one of you but not to both.
Two people whose great grandparents were siblings are third cousins to each other. The children of siblings are first cousins. The grandchildren of siblings are second cousins to each other. The great grand children of siblings are third cousins to each other.
Yes, that is the definition of first cousins - they are the children of siblings.
Both. The children of your father's siblings are your first cousins as are the children of your mother's siblings.
brothers
If two people have the same grandfather, they are siblings or first cousins. If two people have the same great grandfather, they are siblings, first cousins, or second cousins to each other. If two people have the same great great grandfather, they are siblings, first cousins, second cousins, or third cousins.
If your friend's great grandmother was the sister of your great grandfather, then you are third cousins. The children of siblings (brothers and sisters) are first cousins. The grandchildren of siblings are second cousins. The great grandchildren of siblings are third cousins.
Assuming that the "cousin" in the question is a first cousin, the answer is "Second cousin once removed." The way to think of it is that siblings are "zeroth" cousins, children of siblings are first cousins, grandchildren of siblings are second cousins, etc. The concept of "removed" is how many generations off the two cousins in question are. As an example, if Bob and Jim are first cousins, Bob's son and Jim are first cousins once removed, Bob's grandson and Jim are first cousins twice removed, and Bob's son and Jim's son are second cousins. Thus, you and your Dad's first cousin's child are second cousins, so you and his child (your Dad's first cousin's grandchild) are second cousins once removed.
If there is no living spouse, the children inherit, after them the siblings. If there is no living spouse, children or siblings, parents inherit, after them first cousins, then second cousins, etc.
If two people have grandparents who were siblings, then their parents are first cousins and they are second cousins.People whose grandparents are siblings are second cousins.