Edited sentence: However, the date for Y-chromosome haplogroup R, from which R1, R1a, R1b, and R2 spawned off, has been suggested to first appear only 26,800 years ago.It has also been discussed that a series of archaeological cultures can be traced approaching the Indian subcontinent, but none appearing from east-to-west that would substantiate migration out of India...Similarly, The Genographic Project dates this lineage to 30,000 years ago