But, from what I presented, you are saying that the DNA changes of the last 50,000 years happened essentially the same and independently in (i) Europe and (ii) Asia.
Generally in evolution is it more likely that DNA twice the same is from a common ancestor instead of two independent, at least separate, cases of the changes.
For the influences of climate change, that seemed to vary: My guess is that Europe suffered and changed much more from the big ice sheets than Asia. So, it would be more likely that the DNA you say came from climate change came from common ancestors (from still earlier climate change, etc.) than from two independent responses to two (not very similar) climate changes.
Supposedly eyes with lenses and retinas evolved at least twice separately, but that took a very long time and is still considered amazing.
Generally in evolution is it more likely that DNA twice the same is from a common ancestor instead of two independent, at least separate, cases of the changes.
For the influences of climate change, that seemed to vary: My guess is that Europe suffered and changed much more from the big ice sheets than Asia. So, it would be more likely that the DNA you say came from climate change came from common ancestors (from still earlier climate change, etc.) than from two independent responses to two (not very similar) climate changes.
Supposedly eyes with lenses and retinas evolved at least twice separately, but that took a very long time and is still considered amazing.