Selective Breeding 2yy2u

Selective Breeding: http://www.nsgsdc.com/breedhistory.shtml http://www.direwolfproject.com/selective-breeding.html http://thegreenpooch.wordpress.com/2012/11/09/problems-caused-byinbreeding-dogs/ http://www.vce.bioninja.com.au/aos-4-change-over-time/hominidevolution/biological-cultural--techno.html https://www.google.com.au/search?q=selective+breeding+reduces+genetic+div ersity&espv=2&biw=1251&bih=634&source=lnms&tbm=isch&sa=X&ei=lDQ3VI bUI9fnoATisoGgCg&ved=0CAYQ_AUoAQ https://www.youtube.com/watch?v=gWur8Rbc3hc Selective breeding is the act of artificially forcing the continuation of certain phenotypes that an animal or plant possesses which is favourable to the conditions or job that the animal or plant is needed for. It is completely controlled by man and in no way allows for the natural selection that allows for the variation needed for a species to survive changes in their environments. Selective breeding has been happening for centuries with dog breeds, cows and also many other animal types in order to Increase their ability to complete desired jobs or family needs. The traits that are favourable are heavily bred via inbreeding of families of the species in order to continue the trait in following generations. It is a great way to be able to create a breed with traits that are needed for a job that us humans cannot complete but with their instincts, athletic traits and intelligence these jobs can be done. It is also useful in production of products such as using hens that lay large amounts of eggs for breeding to be able to mass produce eggs, or in cows allowing those who produce large amounts of milk for breeding. Technological evolution – humans domesticating animals, Cultural – is the training of the animals Biological – the carrying of traits by selective breeding

Selective breeding of the breed we now know as the “German Shepherd” originated in in 1889, when a standardization of the breed was established by Captain Max Von Stephanitz. He chose the dog for its traits of Inteligence, primal instincts and its powerful frame and jaw. It suited the job of a sheep herder which he needed. It needed little training due to its incredible obedience, but if trained possessed an incredible dog for this job. This family of dogs where heavily inbred with eachother to produce large numbers. The dogs where then utilized in the world wars and now by police forces all around the world. They are a great family dog with their obedience proving allowing them to

be loving and caring towards their owners and the public, but their still powerful frame and jaw creates the opportunity for a great guard dog as well. The opportunity for a great dog with traits that are fantastic for many different situations, and it was taken by Max. And this has allowed for the growing of a great species of animals for years to come. Human intervention in the selective breeding in animals over hundreds of generations has caused a dramatic loss in the natural variety that allows species to survive in the event of a natural disaster or chance even occurring. Confining the species of the world into a smaller bracket of animals, only being mass bred for the need of the human population. Thus reducing the numbers in a population of a species that isn’t needed for the use of humans. Issues that have arisin from selective breeding: Talk about – German Shepherds - degenerative myelopathy, German Shepherds and Chows are prone to gastric cancer, Selective breeding has had a positive impact on the way in which humans as a socity have been able to move forward. With out selectively breeding dogs to her sheep or cows to make extra milk then agricultural and industry would not have reached the heights it has. I think that it has been great for society, but it has had a negative effect on the overall animal populations of the world, with the culling of animals that don’t fit the needed gene pool we have reduced the variation within the species which allows them to evolve, so effectively humans have become god in this case choosing and picking from the gene pool in order to create and sustain a species that suits us.