Horizontal
In this case the unshared parents are full siblings. Further, the three-quarter siblings are also cousins. A possible example was the relationships between Queen Elizabeth I of England and both Henry Carey and Catherine Carey:
Elizabeth was the daughter of Henry VIII and Anne Boleyn. Henry Carey and Catherine Carey were children of Mary Boleyn, the sister of Anne Boleyn. Before Anne's marriage to King Henry, Mary was King Henry's mistress, and King Henry is believed by some to be the father of Henry Carey and Elizabeth Carey. If so, the two Careys would both be three-quarter siblings of Elizabeth.
A more recent example is that of Charles Lindbergh's children with his mistress Brigitte Hesshaimer, and his children with her sister, Marietta Hesshaimer. Another recent example relates to Jermaine and Randy Jackson, of the Jackson 5, who have both fathered children with Alejandra Genevieve Oaziaza.
In the case where the unshared parents are identical twins, the children share as much genetic material as full siblings.
See also Deceased Wife's Sister's Marriage Act 1907.
Read more about this topic: Sibling, Types of Siblings, 3/4 Sibling
Famous quotes containing the word horizontal:
“True. There is
a beautiful Jesus.
He is frozen to his bones like a chunk of beef.
How desperately he wanted to pull his arms in!
How desperately I touch his vertical and horizontal axes!
But I can’t. Need is not quite belief.”
—Anne Sexton (1928–1974)
“And yet out of eternity, a thread
separates itself on the blackness,
a horizontal thread
that fumes a little with pallor upon the dark.”
—D.H. (David Herbert)
“In bourgeois society, the French and the industrial revolution transformed the authorization of political space. The political revolution put an end to the formalized hierarchy of the ancien regimé.... Concurrently, the industrial revolution subverted the social hierarchy upon which the old political space was based. It transformed the experience of society from one of vertical hierarchy to one of horizontal class stratification.”
—Donald M. Lowe, U.S. historian, educator. History of Bourgeois Perception, ch. 4, University of Chicago Press (1982)