Canine family tree reflects human hand

In summary, researchers have found that most genetic variation in modern dogs can be attributed to humans through selective breeding programs. This was discovered through a comparison of dog and wolf DNA by building a canine family tree. The study involved 414 purebred dogs from 85 breeds and identified four main groups: ancient hounds, Mastifs, working dogs, and sporting dogs. The breeds evolved into these groups based on their subtle genetic profiles, with some closely resembling wolves and others developing unique physical characteristics.
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WASHINGTON - Most genetic variation in modern dogs was introduced by humans through selective breeding programs, researchers have found.

This is among the surprising findings of a comparison of dog and wolf DNA by researchers building a canine family tree.

Researchers took DNA samples from 414 purebred dogs representing 85 breeds to see how the canine genome accounts for the smallest Pekinese, curly poodle or herding border collie.

Scientists used a computer program and statistical analysis to identify a dog's breed based on the subtle differences in its genetic profile.

Geneticist Elaine Ostrander of the Fred Hutchinson Cancer Research Centre in Seattle and her colleagues found the breeds evolved into four main groups:

* An ancient group of older hounds like the Afghan, dogs of Asian origin, such as the Chinese Shar-pei, and the northern Spitz dogs like the Siberian Huskey most closely resembled the wolf.
* The Mastifs such as Rottweilers, bulldogs and boxers that share large bodies and square-shaped heads.
* Working dogs like collies and sheep dogs.
* Sporting dogs like hounds and terriers.

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Let them all breed together long enough and my understanding is they 'mutt out'. I love mutts, they're hotdiggitydogulas ! :smile:
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This research highlights the strong connection between humans and dogs, as it shows that most of the genetic variation in modern dogs was introduced by humans through selective breeding programs. This is not surprising, as dogs have been domesticated by humans for thousands of years and have been bred for specific traits and purposes. The fact that the breeds can be grouped into four main categories also reflects the different roles and purposes that humans have assigned to dogs over time.

One interesting finding is that the ancient group of dogs, including the Afghan, Chinese Shar-pei, and Siberian Huskey, most closely resemble the wolf. This suggests that these breeds may have been domesticated from wolves in the past, and have retained some of their ancestral traits. It also highlights the important role that wolves have played in the evolution and domestication of dogs.

Overall, this research provides valuable insights into the origins and evolution of modern dog breeds and the strong influence that humans have had on their genetic makeup. It also serves as a reminder of the close bond and relationship between humans and dogs, and the impact that we have on each other's lives.

Related to Canine family tree reflects human hand

1. What is the significance of the canine family tree reflecting the human hand?

The canine family tree reflecting the human hand is significant because it shows the close evolutionary relationship between humans and dogs. The similar structure and function of the hand and paw suggest a shared ancestry and a long history of coevolution.

2. How does the canine family tree support the theory of evolution?

The canine family tree provides evidence for the theory of evolution by demonstrating the gradual changes in physical characteristics and genetic makeup of canines over time. It also highlights the process of natural selection and adaptation to different environments.

3. Are all canines closely related to humans?

No, not all canines are closely related to humans. While dogs and wolves share a common ancestor with humans, other canines such as foxes and jackals have evolved separately and are not as closely related.

4. How does the canine family tree help us understand the behavior of dogs?

The canine family tree can help us understand the behavior of dogs by providing insight into their social structures, hunting techniques, and communication methods. By understanding their evolutionary history, we can better understand why dogs behave the way they do and how they have adapted to live alongside humans.

5. Can we use the canine family tree to predict future changes in dogs?

While the canine family tree can give us a general understanding of the evolutionary patterns of canines, it is not a reliable tool for predicting future changes in dogs. Evolution is a complex and unpredictable process, and there are many factors that can influence the genetic makeup and physical characteristics of a species.

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