I know when someone is trying to muddy the waters.
We all know the Somali people is a reality that exists just like the Isaaq clan living together with a common socio-politico unity is a reality that exists.
So save all your bs about all the factors that explain this.
Is your Y-DNA not directly passed from father to son to grandson to great-grandson, etc?
It is.
If a Habar Yonis has a T-haplogroup Y-DNA, then he has shared A MORE RECENT FATHER with Ciise Madoobe Dired than the majority of Habar Jeclo (who carry E-V32).
We don't care about your autosomal and all the other things that tell us things we know; that Isaaq is a reality that exists who intermarry, live in the same land, and share common cultural features.
We know that. NO ONE'S CONTESTING THAT.
But if you are an Isaaq with T Y-DNA (like Habar Yonis), you share a more recent father with Ciise Madoobe than the you do with Isaaq with E-V32 Y-DNA.
One more time so this is clear:
Autosomal and all that other stuff just prove you fully joined the unit after adoption, but to see whether you were adopted or not IS ONLY PROVEN by your Y-DNA (aka who is your daddy).
So let's say a group of Ciise Madoobe Dir left their tribe long ago and were adopted into "Habar Yonis."
Obviously today after so much intermarriage (giving each other girls) and sharing socio-cultural artifacts, their genetic information will be near identical.
But that will never take away from the fact that the adopted group will ALWAYS have the Y-DNA of their original Ciise Madoobe group.
You started talking about features and arid climates and what not. Phenotype has nothing to do with Y-DNA and that’s why I mentioned autosomal DNA.
Actually there seems to be an Isaaq-Dir split with Isaaq haplogroup T carriers being closer to each other than they are to Dir haplogroup T carriers.
The only anomaly are the Ciise and Gudabiirsi who could be closer to Isaaq T carriers than they are to Dir T carriers.
What if these two clan were originally Isaaq before being excommunicated? We already have two clans among Ciise who are originally HJ and Toljeclo respectively. Wardiiq Ciise (Yeesif-HJ) and Hooroone Ciise (Toljeclo).
Clans are social constructs and no one is denying that but we are bound by blood money and centuries of intermarriage and alliance.
There is no point in using DNA in an argument when there is not sufficient evidence to make generalisations.
Firstly, there are only around three HG-T 100+ STR test results on FTDNA. These samples belong to a Muse Cabdalle HY individual, a Samaron individual and a Surre sample. Even 100+ STR tests are not entirely reliable when assessing deep male lineages such as those of Somali clans. For instance, the Surre is almost as closely related to the above two as he is to the Scottish Y16897 sample if one was to go by STR's alone. However, they are much better than the error ridden limited STR tests some do. There are no other Dir HG-T results to speak of on FTDNA. On 23andme, there are Gurgura and Biimaal T's but none have tested with FTDNA which is more suitable for tracing male ancestry.
Secondly, DNA tests that use few STR's are a bad predictor as they even suggest a split between the Isaaq T results with some supposedly closer to the Samaron individual than they are to other Isaaqs. Hence, making generalisations based on limited STR's alone is folly to say the least. It is not wise to argue that there is any sort of split without first doing a Big Y Test. For example, on McGee's calculator, by solely using 12 STR tests, the closest relative was a Middle Eastern individual who did not even belong to the same T subclade. The same goes for the limited Darood E-V32 STR tests results. FFS, many of them do not event test more than 25 STR's.
Nonetheless, the most consistent T STR results available of any clan are that of the Ciise in the Iacovacci study. Those guys appear to be a clan cluster in that they have a unique STR DNA signature which points to them descending from the same clan founding father. They are sufficiently differentiated from the Isaaq, Samaron and Surre STR's. The Ciise are not alone in this in my opinion and with more individuals getting tested on FTDNA, a pattern will emerge where certain subclans will most definitely be based on blood and not necessarily a social construct.
There is definitely some truth to subclan identities formed after the adoption of Islam around 800-1000 years ago. The Harti might have an anomaly in Maxamud Saleeban, however, diverse Harti subclans all share a common ancestor within the past 800-1200 years max. This means there is also some truth to the Sheegaad concept where certain clans have adopted others. The difference is that some subclans maintain their clan homogeneity by identifying who is a blood clan member and who isn't as is the case with the Ciise, Samaron, Gurgura etc. whilst other have buried it in the mists of History.