JayGold t1_irzcbg8 wrote
Isn't each breed descended from a single dog of that breed?
MikemkPK t1_irzf9np wrote
No. If you breed together A & B to get C, you can just do that a few dozen or hundreds of times to get the gene population without resorting to incest. If the new desired breed doesn't happen every time, simply don't allow that line to reproduce again.
asshair t1_isjwt5i wrote
Except that's not how it actually works. Pure breeds end up with very specific "desirable" traits that can only be brought out repeated in breeding. So father to daughter breeding, then father to granddaughter, then father to great grand daughter etc.
Anoobis_117 t1_irzcnji wrote
incest dog lore incoming
AdminsAreLazyID10TS t1_is0defc wrote
It goes:
Purebred means inbred.
winklesnad31 t1_irzjht6 wrote
Well all life on earth is descended from a common ancestor.
AnXioneth t1_is0axee wrote
The mythic single cell All Mother
[deleted] t1_is0f9y1 wrote
[deleted]
leojava t1_is2qz30 wrote
Are you telling us we're all incestuos cannibals?
TheDrGoo t1_is0anfv wrote
I don’t know if you’re being sarcastic but that’s not what common ancestor means
Dragmire800 t1_is0hn3q wrote
Um, yes it is. The one lifeform that diverged into all modern life is indeed the common ancestor of all life.
All life is descended from a common ancestor. Otherwise, there would have to have been two completely separate instances of the formation of life, both of which have survived until now
XenaWolf t1_is0krvh wrote
It's a species, not a single individual.
Dragmire800 t1_is0l45w wrote
No, it’s a single individual. One individual lifeform came to be in the primordial oceans of earth, which multiplied and branched out. A whole species didn’t pop out of volcanic vents and start breeding, it was one little guy
Maybe other individuals were also created, but they weren’t the same species, they didn’t evolve, they were formed. They don’t factor into our evolution, only one individual ended up as us
XenaWolf t1_is0ly0d wrote
In biology and genetic genealogy, the most recent common ancestor (MRCA), also known as the last common ancestor (LCA) or concestor, of a set of organisms is the most recent individual from which all the organisms of the set are descended.
The possibility is mentioned, above, that all living organisms may be descended from an original single-celled organism with a DNA genome, and that this implies a single origin for life. Although such a universal common ancestor may have existed, such a complex entity is unlikely to have arisen spontaneously from non-life and thus a cell with a DNA genome cannot reasonably be regarded as the “origin” of life.
​
Edit: I didn't read close enough, you're right, it is individual.
Cohibaluxe t1_is01qjg wrote
If you go back far enough, sure, but then it wouldn’t be the same breed every time.
Viewing a single comment thread. View all comments