Original sentence: However, some newer studies show that R1a lineages may have their origins in North India.Oxford University's Stephen Oppenheimer in his book The Real Eve: Modern Man's Journey Out Of Africa, agree's with Cambridge geneticist Toomas Kivisild findings in that "For me and for Toomas Kivisild, South Asia is logically the ultimate origin of M17 and his ancestors", and that "one estimate for the age of this line in India is as much as 36,000 years old".Some earlier studies came to the conclusion that R1a may have arisen 15,000 years ago in the vicinity of Ukraine, possibly expanding from either the Ukrainian LGM refuge following the end of the last ice age, or from the Pontic-Caspian steppe as a result of the hypothetical Kurgan migrations theory..
Edited sentence: Other studies, however, suggest R1a lineages may have their origins in North India.Some studies came to the conclusion that R1a may have arisen 15,000 years ago in the vicinity of Ukraine, possibly expanding from either the Ukrainian LGM refuge following the end of the last ice age, or from the Pontic-Caspian steppe as a result of the hypothetical Kurgan migrations theory...Stephen Oppenheimer agree's with Cambridge geneticist Toomas Kivisild findings in that "For me and for Toomas Kivisild, South Asia is logically the ultimate origin of M17 and his ancestors", and that "one estimate for the age of this line in India is as much as 36,000 years old"