Abbreviations, Acronyms & Definitions

Abbreviations & Acronyms

abt. — about (meaning “within a few years of”)

aft. — after (meaning “on or after this date”)

atDNA — autosomal DNA is DNA from one of our chromosomes located in the cell nucleus. It generally excludes the sex chromosomes. Humans have 22 pairs of autosomal chromosomes and a pair of sex chromosomes.

bef. — before (meaning “on or before this date”)

bet. — between (meaning “on or between these dates”)

GGF, GGM, GGP — great-grandfather, great-grandmother, great-grandparent

MDKA — Most Distant Known Ancestor, the earliest known, documented ancestor on a specific genealogical line

MRCA — Most Recent Common Ancestor between two people in the genealogical time frame (e.g. NOT Adam and Eve!).

mtDNA — The genetic material found in mitochondria. It is passed down from females to both sons and daughters, but sons do not pass down their mother’s mtDNA to their children.

NN — Latin, nomen nescio (“I do not know the name ”) is used for unknown given names and surnames (e.g. John NN or NN Doe).

unk. — unknown

Y-DNA — A Y-DNA test looks at male inherited Y-chromosome DNA.

Definitions

Remove — change one’s home or place of residence by moving to (another place); “He removed to Wales and began afresh”.


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