[Nadvojvoda Janez Kranjski]

Originally Posted by Zrinski

What do you mean developed earlier? Haplogroup I is virtually non-existant outside of Europe which means it had to develop in Europe.

Yes, it did. It was distributed about 25k years ago. Homo Sapiens entered Europe at least several thousand years earlier.

This finding supports the earlier
suggestion that haplogroup I originated from a pool of
European pre-LGM, middle Upper Paleolithic Y chro-
mosomes (Semino et al. 2000). Our time estimates hint
that its initial spread in Europe may be linked to the
diffusion of the largely pan-European Gravettian tech-
nology ∼28,000–23,000 years ago (Djindjian 2000; Per-
es 2000). On the other hand, these values represent the
lower limit of the age of M170 mutation. The precedent
mutation (M89) (fig. 1A) defines the overarching su-
perhaplogroup F, whose representatives span the entire
non-African gene pool, likely predating the peopling of
Europe (some 40,000–50,000 years ago). Potentially
more informative are the estimates of subclade diver-
gence times. Thus, it appears that I1a, I1b, and I1c all
diverged from I* in the Late Upper Paleolithic/Meso-
lithic period (table 3), possibly during the recolonization
of Europe after the LGM. However, the expansion phase
of I1a and I1b, displaying contrasting phylogeographies,
seems to have occurred later, around the early Holocene.
Only the less frequent subclade I1c, spread thinly over
much of Europe, from Mordvin in the Volga region to
southern France (table 1; fig. 1D), shows a somewhat
earlier age for its STR variation (table 3), suggesting that
the corresponding mutation arose earlier.

http://hpgl.stanford.edu/publication...v75_Semino.pdf

we infer that the LGM in the Southern Alps terminated in a lake-forming collapse about 17.5-18 kyr BP

http://www.ipp.phys.ethz.ch/research/experiments/tandem/Annual/2003/20.pdf