New Dog Breed Evolutionary Tree

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In summary, a new evolutionary tree of dog breeds has been produced based on DNA sequences from over 100 breeds, with the basenji being closest to the root. However, this tree structure may not accurately reflect the relationships between breeds due to crosses and other factors. The pitbull breed is not shown in the tree and may be considered a type of dog rather than a formal breed. All dog breeds are equally related to wolves, with the basenji being one of the first to branch off from other breeds according to the diagram. However, this diagram may not be completely accurate due to limitations in the data.
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BillTre
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A new evolutionary tree of dog breeds has been produced based on DNA sequences from over 100 breeds.
The basenji is closest to the root in this survey. These are interesting dogs that don't bark, but make lots of other noises.

The tree is circular with the root (oldest part) in the center and more derived groups branching off farther from the middle.
A tree structure for dog breeds is not (IMHO) the most accurate way to display this information since some breeds were generated by crosses between other breeds (for example Dobermans). A plot better reflecting this kind of relationship would be a network rather than a tree structure. However, the tree probably just reflects the strongest genetic signals.
 
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Where is the "Pitbull" breed that seems to have become so unpopular with cities and municipalities as being the "biting" dog, and the urge is on to ban their existence.
I do not see it in the blue section, which is where I think it should be marked.
Perhaps there is no such thing as a pitbull breed.
 
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I was looking for that too since I have a dog that is some kind of hound-pit bull mix.
I think pit bulls are close to or the same as a staffordshire bull terrier which is in there at about 4 o'clock.

Even if that's not it, they did not get DNA from what they figure are all the breeds, only about half of them.
 
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Greg Bernhardt said:
So the boxer is the farthest from from a wolf?

Depends how you want to measure farthest.

The Basenji is closest to the wolf (presumably the unlabeled black parts) in that it has the fewest branch points and its branch point is closest to the center of the figure). Its clade branched off first in this view. It also has no other branches, so no other clade was derived from it. It could have changed a lot from a wolf though (does not look like a wolf).

Other breeds branch further out (more recent events). The boxer is not the most recent branch in that respect.
Another way to look at it would be the number of splits (dots at branch points) leading to a breed. The boxer has something like 26. Some of the breeds have many little splits with in their colored clades. There may well be some with more than the boxer. I have not done all the counting.
In another sense, they all have evolved for the same period of time and could all be equally changed from the wolf.
Dogs that look the most like a wolf (to me) and might therefore be argued are least changed structurally, like German Shepards and Huskies, are pretty far apart on the tree so?

Interesting trivia: A particular individual Boxer was the first dog sequenced. It was chosen because preliminary studies showed it had the least heterogenetity in it DNA sequence. The two sequences (two sets of chromosomes) it carried were 70% identical (very inbred). This is probably why so many dog breeds have genetic problems. Now DNA information combined with inteligent breeding may be able to get rid of some of their genetic problems.
 
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BillTre said:
Depends how you want to measure farthest.

The Basenji is closest to the wolf (presumably the unlabeled black parts) in that it has the fewest branch points and its branch point is closest to the center of the figure). Its clade branched off first in this view. It also has no other branches, so no other clade was derived from it. It could have changed a lot from a wolf though (does not look like a wolf).

All dogs share a common ancestor which descended from a common ancestor with wolves. Therefore, all dog breeds are equally close/far from wolves (the question is akin to asking who is more closely related to your cousin, you or your sibling). According the to the diagram, Basenji seem to be one of the first breeds to branch off from other breeds (but see the note below), but this does not imply that they are more related to wolves than other breeds.

Here is a link to the paper being discussed by the news article in the OP (accessible for free): http://www.cell.com/cell-reports/fulltext/S2211-1247(17)30456-4
Here's the cladogram from Fig 1
gr1_lrg.jpg

Note that branches with a high degree of support from the data are marked with various symbols (shown in the lower right-hand corner). Many of the early branches are not marked by these symbols, indicating that the data could not very accurately resolve some of the early branching events in the phylogeny. The diagram represents a best guess, but it would not be surprising of some of the early branches were drawn incorrectly.
 
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Related to New Dog Breed Evolutionary Tree

1. How do scientists create a new dog breed evolutionary tree?

Scientists create a new dog breed evolutionary tree by analyzing genetic data from different dog breeds and their ancestors. They also consider physical characteristics, geographical location, and historical records to determine the relationships between different breeds.

2. What is the purpose of a new dog breed evolutionary tree?

The purpose of a new dog breed evolutionary tree is to understand the evolutionary history and relationships between different dog breeds. It can also help predict future evolutionary changes and aid in breeding programs.

3. How accurate are new dog breed evolutionary trees?

New dog breed evolutionary trees are constantly being updated and revised as new genetic and historical data becomes available. While they may not be 100% accurate, they are the best representation we have of the evolutionary relationships between different dog breeds.

4. Can new dog breed evolutionary trees change over time?

Yes, new dog breed evolutionary trees can change over time as new data and research is conducted. This is a natural process as our understanding of genetics and evolutionary relationships improves.

5. How can we use new dog breed evolutionary trees to improve dog breeding practices?

New dog breed evolutionary trees can help breeders make informed decisions about which breeds to cross and which traits to focus on. It can also help identify potential health issues and guide breeding efforts to improve overall genetic diversity within breeds.

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