โNov-03-2020 04:49 AM
Of dogs and men wrote:
Dogs likely evolved from a wolf population that self-domesticated, scavenging for leftovers from Paleolithic hunter-gatherers in Eurasia (2, 3). However, the exact timing and geographic location where the dog lineage started remain unknown, owing to the scarcity of Paleolithic dogs in the archaeological record. Analyses of genetic data suggest that dog-wolf divergence took place ?25,000 to 40,000 years ago (4, 5), providing an earliest possible date for dog domestication.
Of dogs and men wrote:
genetic relations between human populations largely match the genetic relations between proximal dog populations in Eurasia and the Americas, suggesting that movement patterns are correlated between dog and human. For instance, about half of the ancestry of European dogs originates from Paleolithic West Eurasia, and the other half from Southwest Asia; similarly, modern-day Europeans are a mixture between pre-Neolithic hunter-gatherers and Neolithic farmers from Anatolia.
Of dogs and men wrote:
In addition to sharing dispersal paths, dogs and humans have traced parallel paths of evolutionary adaptation. Variation in the copy number of genes encoding amylase, the enzyme required for breaking down starch, is such an example of convergent evolution. Humans carry extra salivary amylase copies compared to chimpanzees (8, 9), owing to high starch consumption that perhaps began before farming (10). Likewise, most dogs, compared to wolves, carry extra pancreatic amylase (AMYB2) copies, possibly facilitating starch digestion in their new environment (11). Bergstrรถm and colleagues show that early dogs already carried extra amylase copies compared to wolves, but amylase copy numbers further expanded following the increasing reliance on starch-rich agricultural diets in prehistoric Eurasia over the past 7000 years. Similarly, a recent study on Arctic sled dogs reported genetic signatures of adaptation in their fatty acid metabolism genes (12), analogous to their Inuit masters who carry adaptive changes in the same metabolic pathwaysโa likely response to the high-fat Arctic diet (13).
โSep-23-2022 02:46 PM
colliehauler wrote:toedtoes wrote:Just recalling a chart the International Wolf Center in Ely had on the wall.
I don't think that is correct. Right now, the breeds most commonly identified as being the most closely related genetically to wolves are (not in order):
Huskies
Malamutes
Chow Chows
Akitas
Shiba Inus
Shih Tzus
Llhasa Apsos
Pekinese
Samoyed
Saluki
Tibetan Terrier
Basenji
Afghan Hound
Shar Pei
โSep-23-2022 02:03 PM
toedtoes wrote:Just recalling a chart the International Wolf Center in Ely had on the wall.
I don't think that is correct. Right now, the breeds most commonly identified as being the most closely related genetically to wolves are (not in order):
Huskies
Malamutes
Chow Chows
Akitas
Shiba Inus
Shih Tzus
Llhasa Apsos
Pekinese
Samoyed
Saluki
Tibetan Terrier
Basenji
Afghan Hound
Shar Pei
โSep-23-2022 01:56 PM
ppine wrote:I remember seeing that. Was it in Russia? They selected the calmest pairs to breed and they also did a experiment with the most aggressive pairs as well.
Experiments with the breeding of foxes has shown that wild animals can be more or less domesticated in a few generations. By selecting for the calmest animals, the least afraid of humans they can be pet quality animals in about 7 generations.
The wide variety and number of dog breeds, is a testament to the power of breeding. Line breeding on purpose is fine. Spay and neuter pets unless you plan to improve the breeding of your pet's line. In-breeding is a slippery slope that brings out recessive genes, but al;so brings along with it things like deafness, blindness and bad hips and eyes.
โSep-17-2022 01:37 PM
โSep-17-2022 10:04 AM
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โJan-30-2022 11:20 AM
โJan-27-2022 04:38 AM
BCSnob wrote:
When youโre bored with other things during this COVID isolation here is a recently published genetic study of dogs and man looking at how both spread throughout the world together (sometimes not together).
***Link Removed***
Here is a commentary on this study and the current state of knowledge on this topic.
Of dogs and ***Link Removed***
A few interesting takeaways are:Dogs likely evolved from a wolf population that self-domesticated, scavenging for leftovers from Paleolithic hunter-gatherers in Eurasia (2, 3). However, the exact timing and geographic location where the dog lineage started remain unknown, owing to the scarcity of Paleolithic dogs in the archaeological record. Analyses of genetic data suggest that dog-wolf divergence took place? 25,000 to 40,000 years ago (4, 5), providing the earliest possible date for dog domestication.
โDec-22-2021 08:35 AM
โOct-15-2021 06:31 AM
dturm wrote:
Very interesting. This means that dogs actually can utilize those EVIL grains and have been for eons?? (Read sarcasm for those of you who don't know my posting history :B)
Thanks for sharing.
โNov-03-2020 05:55 PM
โNov-03-2020 04:40 PM