Showing posts with label Dogs. Show all posts
Showing posts with label Dogs. Show all posts

Sunday, 5 May 2024

Creationism in Crisis - Humans Had Domesticated Dogs At Least 10 Thousands Years Before 'Creation Week'


Siberian wolf, Canis lupus
Ancient Mitogenomes Reveal the Maternal Genetic History of East Asian Dogs | Molecular Biology and Evolution | Oxford Academic

These days, no serious scientist sets out to prove the Bible is wrong; discovering truth does that anyway - for anyone who can join the dots and do the simple logic. For example, humans could not have domesticated dogs some 23,000 years ago in Siberia by domesticating the local variety of grey wolf, if the Universe is just 10,000 years old.

And yet a paper published recently in the journal Molecular Biology & Evolution shows that they did exactly that.

In the context of mitochondrial DNA, what are haplotypes? In the context of mitochondrial DNA (mtDNA), haplotypes refer to specific combinations of genetic variants or polymorphisms within the mitochondrial genome. Unlike nuclear DNA, which is inherited from both parents, mtDNA is passed down exclusively from the mother to all of her offspring. This maternal inheritance pattern makes mtDNA useful for studying ancestry, population genetics, and evolutionary history.

A haplotype represents a unique combination of nucleotide variations or mutations along the mtDNA sequence. By analyzing these haplotypes, researchers can track maternal lineages, study population migrations, and infer evolutionary relationships among different groups of individuals. Haplotypes are often used in studies of human populations, as well as in forensic genetics and medical research related to mitochondrial disorders.
Refuting the Bible was almost certainly not the intention of the authors, jointly led by Songmei Hu, of Joint International Research Laboratory of Environmental and Social Archaeology, Shandong University, Qingdao, China, and Xijun Ni and Qiaomei Fu, both of the Institute of Vertebrate Paleontology and Paleoanthropology, Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Beijing, China, but the facts they discovered do just that. They had set out to resolve the question of where exactly dogs had been domesticated, based on an analysis of the mitochondrial DNA.

Mitochondrial DNA (mDNA) is inherited through the maternal line, so an analysis of the geographical and temporal distribution of the various haplotypes of mDNA and how they relate to one another should give an indication of where and when the ancestral haplotype lived.

How the team did this is explained in their paper:

Wednesday, 16 November 2016

Canine Conundrum For Creationists

Amy2B copy number variation reveals starch diet adaptations in ancient European dogs | Open Science

Here is a sweet treat for dog lovers, anthropologists and evolutionary biologists, though not so much for creationists.

An open access paper published very recently in Royal Society Open Science not only sheds light on domestic dog and modern human co-evolution but illustrates an important principle in evolutionary biology: evolution will occur in the presence of a change in the environment with little or no change in the information in the genome. It also shows how gene duplication can play an enormous role in the evolution of a species.

Tuesday, 21 April 2015

How Wolves Evolved Into Dogs

How the wolf became the dog

There is no doubt now that the domestic dog is a domesticated wolf. It has recently been reclassified by taxonomists as a subspecies of wolf, Canis lupus, so instead of Canis familiaris it is now Canis lupus familiaris. It was almost certainly the first animal to be domesticated but ideas have differed over how this came about.

In 1907, Francis Galton proposed that humans had taken wolf puppies back to their camp and raised them, maybe as playthings for the children, but this view is now seen as naive. You can raise a wolf puppy by hand but you don't get a dog; you get a dangerous wild animal. The genes of children who played with growing wolf puppies would probably have been quite quickly eliminated from the human gene pool as well as the puppies' genes being eliminated from the wolf gene pool.

So, clearly something else happened.
Web Analytics