Showing posts with label domesticated animals. Show all posts
Showing posts with label domesticated animals. Show all posts

Wednesday, April 10, 2019

Did Humans Domesticate Cats?

Dated back to ancient times, cat’s DNA showed that they domesticated themselves stated in an article on National Geographic website. Although cats now prefer to lay on the couch instead of outside their DNA shows that it hasn’t changed in thousands of years. Cats, even as wildcats, has been by a human’s side way before they became our house pets. A cat’s genes have only changed slightly in the past 9,000 years. This change appeared to be the dots and stripes on their coat of hair.

In this article, it states that researchers looked at DNA of over two hundred cats within the past 9,000 years and it showed that all the cats came from these two pedigrees; from Asia into Europe and Africa into Egypt. Both pedigrees showed that cats were not forced into being house pets, but just settled into it. Cats naturally patrolled around human's yards and killed mice and rats. They also were just attracted to humans, especially in the African lineage. 



Even though cats surprisingly attached to humans, the researchers still looked into the DNA of cats and it revealed that the DNA has not changed but the marking of its coat. When the coat of the cat was stripped, it showed that they were domesticated. This was not a definite identification of domesticated tabby cats until the 18th- 19th century.

The researchers suggested that the more we look into cats, the more we will understand the domestication process of animals. Being that cats naturally domesticated themselves, I do think further research into this animal could open up new doors or an explanation of how animals became domesticated.

Friday, April 6, 2018

Genetic Diversity in European Bovine Breed

In a European study from Munich, Busa cattle (an old European breed) was found to be far more genetically diverse than many of the more modern European breeds available today. The study tested 1828 different cattle representing 60 breeds, 350 of those individuals being Busa cattle. When genotyping for "single-nucleotide polymorphisms", Busa cattle were found to have 14 unique strains. Most of the genetic diversity (that being non-artificially selected diversity) of domesticated cattle can be traced back to or attributed to Busa cattle. Currently there is some push towards a conservation program for this breed to help maintain the functional diversity of cattle worldwide.
As most domesticated breeds of bovine have been bred not to survive but for meat/milk production, the survival of this breed (smaller and less productive but far hardier and healthier) is fascinating. Perhaps the introduction of some of the Busa cattle's' genetics into the more specialized breeds can help to lower their health issues.

Article Link- https://www.sciencedaily.com/releases/2018/03/180328143255.htm
Additional Info- https://onlinelibrary.wiley.com/doi/abs/10.1111/mec.14555