Complex sentence: Current populations with a high degree of Haplogroup R1b are known to possess traces of Cro Magnon DNA, R1b Runs highest among indigenous populations of the island of Ireland and reaches 99% along the western seaboard.
Split into simpler sentences: Current populations with a high degree of Haplogroup R1b are known to possess traces of Cro Magnon DNA. R1b runs highest among indigenous populations of the island of Ireland and reaches 99% along the western seaboard.