are double cousins more related than half siblings?

Question

Double cousins are when your mother's sister has a child with your fathers brother. Therefore you share not two but all four grandparents and not four but eight greatgrandparents.

Answer 1

It depends...double on which lines? My maternal grandmother had 7 sisters. Three of her sisters married 3 brothers. Genetically, those kids have roughly a 50% genetic match...because each child only inherits 1/2 of their DNA from each parent. The other half of the parent's DNA may or may not match in the next sibling. Half siblings share at least 25%, but can share as much as 50%.

If this seems complicated, then ponder this. In the family I described there were a total of 24 kids between the three sisters/brothers who were intermarried. One of the kids needed a bone marrow transplant. It wasn't her full brothers and sisters who were her perfect match...it was a cousin outside of those 24 who only had a link to her through her mother and no link through the father. The fickleness of genetics lets things skip one line and pop up in unexpected places. Even 24 kids with all the same heritage on both sides of the family weren't perfect matches to each other.

Answer 2

My father had Double cousin's. His parents were Richard and Alice.

My Grandfather Richard married My Grandmother Alice

Richard's Sister Edna married Alice's brother Jewel.

Both couples had children. This made each set of children double cousins.

All the children shared the SAME 4 Grandparents, This makes these Double Cousins as close genically as Full Brothers and Sisters.

Answer 3

I rather have double cousins and specific its the subsequent closest ingredient to having yet another sibling as you have the two comparable instruments of grandparents and absolutely everyone on the topic of them is on the topic of you :)

Answer 4

It was my belief that double cousins are when ,for instance, sisters and brothers in one family marry the sisters and brothers of another family. Their children then become double first cousins. In my family, 2 of my grandmother's sisters (their maiden name was Johnson) married 2 brothers named Jones, and 2 of the same Jones family sisters married 2 of my grandmother's brothers. So, I have double first cousins running out my ears, so to speak.

Answer 5

Let's see...half siblings share 1 parent, or 2 grandparents, or 4 great grandparents.
Double cousins share 2 grandparents, or 4 great grandparents, also.

So unless I'm confused, they're equally related.

Answer 6

I've never heard of Double Cousins. But a sibling relationship beats a cousin hands down.

TMD

Answer 7

I would say no.

Answer 8

NO!!