Confusion about I-L621!?

[Linebacker]

I've been away from the forum for a long time and I've looked over my old 23andme stuff from back in the day. You know how 23andme is, they don't give you an abundance of information to go on when it comes to your haplogroups, its kind of like a side feature.

What confuses me is that I'm finding confliction information about my subclade L-621. It seems to be the most confused subclade there is.

Some examples:

Geni says its I2a1a:

Haplogroup I2a1a2b-L621, or to be precise, its subclade Y3120, is often considered as another “Slavic” haplogroup (beside R1a-Z282), which is wrong and scientifically inadmissible. The criterion of coherence is unambiguous: “Individuals from genetically distinguishable groups should not be given the same name; individuals from genetically indistinguishable ones should.”

Eupedia says it is I2a1b:


FamilytreeDna says its I2a2:

..I2a2 'Dinaric' ..L621>CTS10228 and also S17250- ,need Y4460 or Z17855 test (I-CTS10228)............................ 22

...I2a2 'Dinaric' ..L621>CTS10228 and also S17250- ,Y4460- ,Z17855- (I-CTS10228*)-.......................................... 2

...I2a2 'Dinaric' ..L621>CTS10228>S17250 and also Y4882- Z16971- Z16983- ( I-S17250*)...................................14

...I2a2 'Dinaric' ..L621>CTS10228>S17250 need Y4882 , Z16971, Z16983 or BigY test ( I-S17250).......................20

...I2a2 'Dinaric' ..L621>CTS10228>S17250>P61 ( need Y4882 or Z16971 test, almost all Dinaric are P61-)............1

...I2a2 'Dinaric' ..L621>CTS10228>S17250>Y4882 (I-Y4882)............................................ .......................................30

...I2a2 'Dinaric' ..L621>CTS10228>S17250>Z16971>A2423 (I-A2423) .................................................. ...................2

...I2a2 'Dinaric' ..L621>CTS10228>S17250>Z16971>A815 (I-A815) .................................................. .......................2

...I2a2 'Dinaric' ..L621>CTS10228>S17250>Z16983/A356 (I-Z16983/A356) .................................................. ..........14

...I2a2 'Dinaric' ..L621>CTS10228>Y4460 and also Y3118- S8201- (I-Y4460*)........................................... ...............2

...I2a2 'Dinaric' ..L621>CTS10228>Y4460 need Y3118 or S8201 test (I-Y4460) .................................................. .....6

...I2a2 'Dinaric' ..L621>CTS10228>Y4460>S8201 (I-S8201)............................................ ..........................................12

...I2a2 'Dinaric' ..L621>CTS10228>Y4460>Y3118 (I-Y3118)............................................ ...........................................8

...I2a2 'Dinaric' ..L621>CTS10228>Z17855 (I-Z17855)........................................... .................................................. ...2

...I2a2 'Dinaric' ..L621>CTS10228>Z17855>A1221 (I-A1221)............................................ .........................................2

[Linebacker]

Realized I did not actually post any question to the thread. The question is which one of them is correct?

[Ion Basescul]

I've been away from the forum for a long time and I've looked over my old 23andme stuff from back in the day. You know how 23andme is, they don't give you an abundance of information to go on when it comes to your haplogroups, its kind of like a side feature.

What confuses me is that I'm finding confliction information about my subclade L-621. It seems to be the most confused subclade there is.

Some examples:

Geni says its I2a1a:



Eupedia says it is I2a1b:


FamilytreeDna says its I2a2:

It can be confusing because nomenclatures are updated yearly, and sometimes they change drastically, as you see in your examples from above.
That's why you see me use I-PH908 in the profile since, just like L621, PH908 will never change, compared to combinations like I2a2, I2a1b, I2a1a, maybe I2xAlpha tomorrow.
But if you want to see the nomenclature in that style, then you can always check the official standards from here: https://isogg.org/tree/
The standard for 2019-2020 states that I-L621 is also known as I2a1a2b nowadays.

[Linebacker]

The standard for 2019-2020 states that I-L621 is also known as I2a1a2b nowadays.

That`s basically thread complete.

Thank you for this.