Draft:Genealogy

Genealogy is the study and recording of the descent of a person, family, or group from their ancestors.

'Geneology' is a common misspelling of 'genealogy'.

Ancestors
Def. one "from whom a person is descended, whether on the father's or mother's side, at any distance of time; a progenitor; a forefather" is called an ancestor.

Def. a "series of ancestors or progenitors; lineage, or those who compose the line of natural descent" is called an ancestry.

Theoretical genealogy
Def. the "study, and formal recording of" the "descent of a person, family, or group from an ancestor or ancestors; lineage or pedigree" is called genealogy.

Genetics
Def. a "branch of biology that deals with the transmission and variation of inherited characteristics, in particular chromosomes and DNA" is called genetics.

"Albert Perry carried a secret in his DNA: a Y chromosome so distinctive that it reveals new information about the origin of our species. It shows that the last common male ancestor down the paternal line of our species is over twice as old as we thought."

"Perry did not descend from the genetic Adam. In fact, his Y chromosome was so distinct that his male lineage probably separated from all others about 338,000 years ago."

Examinations of "an African database of nearly 6000 Y chromosomes [revealed] similarities between Perry’s and those in samples taken from 11 men, all living in one village in Cameroon."

"One possibility is that Perry’s Y chromosome may have been inherited from an archaic human population that has since gone extinct. If that’s the case, then some time within the last 195,000 years, anatomically modern humans interbred with an ancient African human."

At "a Nigerian site called Iwo Eleru [the] fossils showed a strange mix of ancient and modern features, which also suggested interbreeding between modern and archaic humans."

“The Cameroon village with an unusual genetic signature is right on the border with Nigeria, and Iwo Eleru is not too far away.”

Crocodiles
While a direct genetic link between Gavialis gangeticus and Mystriosaurus laurillardi is not available due to a lack of DNA from Mystriosaurus laurillardi, these two crocodiles may be close relatives.

The Mystriosaurus laurillardi is from the Jurassic 180 Ma and the Gavialis gangeticus may have evolved 42 Ma. Fossil remains were excavated in Pliocene deposits in the Sivalik Hills and Narmada River valley.

Mystriosaurus laurillardi is from the clade Neosuchia, whereas Gavialis gangeticus is from the clade Eusuchia.

Hypotheses

 * 1) Genealogy of hominins may go back 4 x 106 b2k.