The equator.
The distance through the center of a circle is called the diameter.
matriarchies or matriarchates
International Date Line
It's called theta and it's a Greek letter.
If you are tracing your father's ancestry, you are looking at your paternal ancestry.
Your mother's family is your maternal family.Family history traced through the mother is called the matrilineal history.
Your maternal grandfather's side of the family is referred to as your maternal grandfather's lineage or maternal grandfather's family.
The main difference between them is that the Algonquians traced along the line of there father which is called Patrilineal and the Iroquois traced the line of their mothers ancestry which is called Matrilineal.
Your father's maternal grandmother is your great-grandmother.
she would be called your cousin. Maternal uncle's daughter is your cousin.
Contractions.
CHORIONIC
A person with a Caucasian and African ancestry was called a Mulatto.
A person who studies family ancestry is called a genealogist.
Maternal
your great uncle